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State-of-the-art strategies for Lewis acid-catalyzed strain-release cycloadditions of bicyclo[1.1.0]butanes (BCBs)

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01741B, Review Article
Xiang Liu, Jiawei He, Keyu Lin, Xingyue Wang, Hua Cao
This review primarily focuses on the latest developments in Lewis acid-catalyzed strain-release cycloaddition reactions of BCBs.
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The content of this RSS Feed (c) The Royal Society of Chemistry




addition

Visible-light heterogeneous photocatalysis with an ionic porous organic polymer (IPOP): synthesis of β-keto sulfoxides and benzothiophene diesters by tandem radical addition–oxidation reactions

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01382D, Research Article
Ajay Kumar Sahoo, Parag Tamuly, Jarugu Narasimha Moorthy
An IPOP, constructed constructed from cyanuric chloride and the readily accessible 2,5-di(pyridin-4-yl)thiazolo[5,4-d]thiazole (BpyTzTz), is shown to exhibit excellent visible light absorption and serve as a metal-free heterogeneous photocatalyst.
To cite this article before page numbers are assigned, use the DOI form of citation above.
The content of this RSS Feed (c) The Royal Society of Chemistry




addition

Stereoselective access to furan-fused [5.5.0] bicyclic heterocycles enabled by gold-catalyzed asymmetric [8 + 4] cycloaddition

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01841A, Research Article
Xunhua Wang, Jianhua Wang, Xiaoxun Li
A gold-catalyzed asymmetric [8 + 4] cycloaddition was developed to afford highly functionalized furan/pyrrole-fused [5.5.0] polycyclic heterocycles with good diastereo- and enantioselectivity.
To cite this article before page numbers are assigned, use the DOI form of citation above.
The content of this RSS Feed (c) The Royal Society of Chemistry




addition

Visible-light excited copper activating unactivated alkyl iodides for radical addition/cyclization to access oxindole derivatives

Org. Chem. Front., 2024, 11,6380-6384
DOI: 10.1039/D4QO01329H, Research Article
Hang Luo, Fangnian Yu, Luqing Lin
The photocopper catalyst facilitates halogen atom transfer to give unactivated alkyl radicals, which is critical for achieving radical cyclization in the absence of an exogenous photocatalyst.
The content of this RSS Feed (c) The Royal Society of Chemistry




addition

Cobalt-catalyzed enantioselective reductive addition of ketimine with cyclopropyl chloride to construct chiral amino esters bearing cyclopropyl fragments

Org. Chem. Front., 2024, 11,6311-6318
DOI: 10.1039/D4QO01474J, Research Article
Jiangtao Hu, Tingting Xia, Xianqing Wu, Hongrui Feng, Jingping Qu, Yifeng Chen
Co-catalyzed asymmetric reductive addition of ketimine with cyclopropyl chloride has been realized to access diverse chiral amino esters bearing cyclopropyl fragments with broad functional group tolerance and excellent enantioselectivities.
The content of this RSS Feed (c) The Royal Society of Chemistry




addition

Enantioselective Addition of 3-hydroxyquinolin-2(1H)-one to Isatin and Pyrazole-4,5-dione Derived Ketimines

Org. Chem. Front., 2024, Accepted Manuscript
DOI: 10.1039/D4QO01895H, Research Article
Yue Wei, Guishun Bai, Jiamin Wu, Yi Hua, Tao Zhang, Congyong Yue, Hong Wang, Xiaoze Bao
The enantioselective reactivity of 3-hydroxyquinolin-2(1H)-ones was developed through their addition to isatin and pyrazole-4,5-dione derived ketimines, affording novel architectures featuring multiple natural products scaffolds in high yield with excellent enantioselectivities....
The content of this RSS Feed (c) The Royal Society of Chemistry




addition

Recent advances in carbon atom addition for ring-expanding single-atom skeletal editing

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01806K, Review Article
Ting Yuan, Lei Shi
This review focuses on recent advances in carbon atom addition for ring-expanding single-atom skeletal editing.
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The content of this RSS Feed (c) The Royal Society of Chemistry




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Synthesis of oxa-bridged carbocycles via rhodium/Lewis acid catalyzed [3 + 3] and [4 + 3] cycloadditions of carbonyl ylides with donor–acceptor strained carbocycles

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01831A, Research Article
Jiale Li, Lingfei Wang, Pei-Nian Liu, Xingguang Li
A method for cooperative rhodium/Lewis acid-catalyzed cycloadditions of carbonyl ylides with donor–acceptor (D–A) strained carbocycles is described. It affords structurally diverse oxa-bridged carbocycles with high efficiency and stereoselectivity.
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The content of this RSS Feed (c) The Royal Society of Chemistry




addition

DFT investigation of the mechanism and role of N-heterocyclic carbene (NHC) in constructing asymmetric organosilanes using NHC-catalyzed [4+2] cycloaddition reaction

RSC Adv., 2024, 14,35475-35489
DOI: 10.1039/D4RA03676J, Paper
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Batoul Alipour
The mechanism and origin of stereoselectivity for the synthesis of asymmetric organosilanes using NHC are theoretically investigated.
The content of this RSS Feed (c) The Royal Society of Chemistry




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Gold soars over $2,700 an ounce on additional boosters

US presidential polls uncertainty, jobless claims and new Israeli attack on Hamas add more glitter



  • Gold & Silver

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Stable homogeneous silver(I) catalysts for the highly efficient cycloaddition of azides onto terminal alkynes in water

Dalton Trans., 2024, Accepted Manuscript
DOI: 10.1039/D4DT02825B, Communication
Meysam Kakavand, Anna Kozakiewicz, Abdollah Neshat
To develop stable and efficient silver(I) catalysts and evaluate the role of sulfur and phosphorus donor ligands in the catalytic cycloaddition of selected organic azides and alkynes (AAC), a series...
The content of this RSS Feed (c) The Royal Society of Chemistry




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Singapore Airlines to invest additional ₹3,195 crore in Air India post-Vistara merger

Full-service carrier Vistara, which started flying on January 9, 2015, is a joint venture between Tatas and Singapore Airlines, where the latter holds a 49% shareholding




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Additional Chief Secretary holds review meeting at Bharathidasan University




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Singapore Airlines to invest additional ₹3,195 crore in Air India post-Vistara merger

The merger will result in Singapore Airlines having a 25.1% stake in the enlarged Air India




addition

Cycloaddition of CO2 with epoxides into cyclic carbonates catalyzed by a binary organocatalyst under mild conditions

Catal. Sci. Technol., 2024, 14,6215-6223
DOI: 10.1039/D4CY00639A, Paper
Wen-Wang Yu, Xiang-Guang Meng, Zi-Yu Gan, Wen Li, Yu-Lian Zhang, Jie Zhou
Highly efficient capture and conversion of CO2 into cyclic carbonates from flue gas under atmospheric pressure.
The content of this RSS Feed (c) The Royal Society of Chemistry




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Local value addition in ‘Made in India’ smartphones climbs 16% in 2023

Samsung’s high local value add in comparison to Apple is largely a function of time





addition

One-pot synthesis of conjugated vinylene-extended viologen ionic radical polyacetylenes for visible light-promoted photocatalytic CO2 cycloaddition

Green Chem., 2024, 26,10876-10885
DOI: 10.1039/D4GC03683B, Paper
Yanan Chang, Shuo Wang, Juan Chen, Zixuan Xu, Qing Shi, Yunjie Mao, Yanli Gai, Zhouyang Long, Guojian Chen
In situ synthesis of a conjugated vinylene-extended viologen ionic radical polyacetylene (VIRP-2) for visible light-promoted photocatalytic CO2 cycloaddition under ambient conditions.
The content of this RSS Feed (c) The Royal Society of Chemistry




addition

Electrochemistry-enabled Rh-catalyzed regioselective [4 + 1] and [4 + 2] cycloaddition of benzoic acid with alkynyl esters/amides

Green Chem., 2024, 26,10996-11002
DOI: 10.1039/D4GC03753G, Paper
Wei-Jung Chiu, Chung-Ming Sun
The reaction of benzoic acids with alkynyl esters/amides in the presence of a Rh-catalyst and AcOH as an additive to give phthalides by [4 + 1] annulation. In contrast, the additive NaOAc exclusively affords isocoumarins through the [4 + 2] pathway.
The content of this RSS Feed (c) The Royal Society of Chemistry




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Additional video footage surfaces in Ahmaud Arbery shooting — confirms his murder unjustified, say family lawyers

Investigators are using additional video footage to reconstruct the February afternoon that Ahmaud Arbery was fatally shot in a quiet southern Georgia neighborhood.




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Additional video footage surfaces in Ahmaud Arbery shooting — confirms his murder unjustified, say family lawyers

Investigators are using additional video footage to reconstruct the February afternoon that Ahmaud Arbery was fatally shot in a quiet southern Georgia neighborhood.




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Alberta reports 59 new COVID-19 cases, one additional death

Alberta reported 59 new cases of COVID-19 on Saturday, marking a full week of daily new cases remaining in the double digits.



  • News/Canada/Edmonton

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THE DELAWARE WELCOME CENTER ON I-95 IS OPEN FOR GAS, RESTROOMS AND DRIVE THRU COFFEE. ADDITIONALLY, THE MAIN TRAVEL PLAZA IS OPEN FOR RESTROOM USAGE AND LIMITED TAKE OUT FOOD SERVICES. DINE-IN FACILITIES REMAIN UNAVAILABLE UNTIL FURTHER NOTICE.



  • Special Travel Alert

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DUE TO CURRENT HEALTH CONCERNS, DMV IS NOW BY APPOINTMENT ONLY UNTIL FURTHER NOTICE. IN ADDITION, OUR WEDNESDAY HOURS WILL BE 8:00AM-4:30PM.APPOINTMENT NUMBERS GEORGETOWN DRIVER SERVICES: 302-853-1044, GEORGETOWN VEHICLE SERVICES: 302-853-1034



  • Special Travel Alert

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DUE TO CURRENT HEALTH CONCERNS, DMV IS NOW BY APPOINTMENT ONLY UNTIL FURTHER NOTICE. IN ADDITION, OUR WEDNESDAY HOURS WILL BE 8:00AM-4:30PM.APPOINTMENT NUMBERS DOVER VEHICLE SERVICES: 302-744-2568,



  • Special Travel Alert

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DUE TO CURRENT HEALTH CONCERNS, DMV IS NOW BY APPOINTMENT ONLY UNTIL FURTHER NOTICE. IN ADDITION, OUR WEDNESDAY HOURS WILL BE 8:00AM-4:30PM.APPOINTMENT NUMBERSDELAWARE CITY DRIVER SERVICES: 302-365-8771, DELAWARE CITY VEHICLE SERVICES: 302-365-8770



  • Special Travel Alert

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DUE TO CURRENT HEALTH CONCERNS, DMV IS NOW BY APPOINTMENT ONLY UNTIL FURTHER NOTICE. IN ADDITION, OUR WEDNESDAY HOURS WILL BE 8:00AM-4:30PM.APPOINTMENT NUMBERS WILMINGTON DRIVER SERVICES: 302-434-3209, WILMINGTON VEHICLE SERVICES: 302-434-320



  • Special Travel Alert

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SBI is geared to meet any additional demand for housing loans

The bank, which witnessed a spike in NPAs in its home loan portfolio post the merger of the associate banks, expects the NPA levels to dip with improvements in underwriting and recoveries.




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Public Health Announces 166 Additional Positive Cases; 8 New Deaths

The Delaware Division of Public Health (DPH) is announcing eight additional fatalities related to coronavirus disease 2019 (COVID-19) and is providing an update on the number of positive cases and recovered individuals. All data reported through the daily updates are based on data received as of 6 p.m. the previous day.



  • Delaware Health and Social Services
  • Division of Public Health
  • News
  • Coronavirus

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US Army Corps Announces Additional Geothermal MATOC Award

The U.S. Army Corps of Engineers – Engineer Support Center, based in Huntsville, Ala., this week announced a new contract for use of geothermal technology as part of the Multiple Award Task Order Contract (MATOC) series for renewable and alternative energy production work orders at Department of Defense (DOD) installations.




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FBR mulling over options to fetch additional Rs600b

ISLAMABAD: The FBR is mulling over different options to fetch additional Rs600 billion through effective enforcement and administrative improvements as well as moving ahead with one-time tax on sectors earning abnormal profits at difficult times, it is learnt.The FBR’s task for generating...




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FBR mulling over options to fetch additional Rs600bn

ISLAMABAD: The FBR is mulling over different options to fetch additional Rs600 billion through effective enforcement and administrative improvements as well as moving ahead with one-time tax on sectors earning abnormal profits at difficult times, it is learnt.The FBR’s task for generating...




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FBR mulling optionsto fetch additional Rs600b

ISLAMABAD: The FBR is mulling over different options to fetch additional Rs600 billion through effective enforcement and administrative improvements as well as moving ahead with one-time tax on sectors earning abnormal profits at difficult times, it is learnt.The FBR’s task for generating...




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Investigators reviewing additional video footage in Ahmaud Arbery case...


Investigators reviewing additional video footage in Ahmaud Arbery case...


(Second column, 1st story, link)





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Moses Vail of Huntington, L.I.: showing his descent from Joseph (2) Vail, son of Thomas Vail, at Salem, Massachusetts, 1640, together with collateral lines and with additions and corrections to both H.H. Vail's "Jeremiah Vail family" (pub. 1

Archives, Room Use Only - CS71.V129 1947




addition

The ABC universal commercial electric telegraph code: improved by the addition of a code condenser which enables the user to cable two code words and check them in one word, thus saving 50% of cable charges ... specially adapted for the use of financiers,

Archives, Room Use Only - HE7676.C53 1919




addition

CTA calls for additional 30 day lockdown for Tibetans in India




addition

Sisi grants himself additional powers

Egypt approves amendments to law




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Punjab Cabinet amends FRBM Act for Rs 928 crore additional borrowing




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Gray whale specimen an important addition to Natural History Museum collections

Rope, golf balls, sweat pants, bottles and aluminum cans are a few of the discarded items biologist Matt Klope says he has found inside the […]

The post Gray whale specimen an important addition to Natural History Museum collections appeared first on Smithsonian Insider.




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IOM Report Recommends Eight Additional Preventive Health Services to Promote Womens Health

A new report from the Institute of Medicine (IOM) recommends that eight preventive health services for women be added to the services that health plans will cover at no cost to patients under the Patient Protection and Affordable Care Act of 2010 (ACA).




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IDEX Biometrics receives certification by an additional global payment network

IDEX Biometrics has announced that its dual interface...




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Additional legislation and enforcement needed to protect threatened and rare reptiles from the pet trade in Europe?

The prominent role of EU countries in the international trade of reptiles for pets, including many rare and illegally traded species, is highlighted in a recent study. The researchers call for better enforcement and tighter legislation to control the trade, which is a major threat to global biodiversity. In particular the researchers appeal for legislation to be passed for species protected in their native range countries, which can currently be freely traded in the EU if they are not subject to international trade conventions such as CITES.




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Grassy field margins provide additional biodiversity benefits by connecting habitats

Habitat fragmentation is a threat to biodiversity, especially in agricultural land where there are also many endangered species. Corridors between habitats are one way to counteract its effects. A study suggests that grassy field margins — established throughout Europe to improve water quality — could act as corridors. The study, which measured the effects of field margins on butterflies, concludes that agricultural schemes should include this corridor function.




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VDOT PREPARATIONS CONTINUE IN HAMPTON ROADS AS POTENTIAL HURRICANE IMPACTS REMAIN - VDOT Hampton Roads takes additional measures to ease travel and maintain access to roads and facilities for evacuees throughout the region

SUFFOLK– As Hurricane Florence approaches the coast, the Virginia Department of Transportation (VDOT) Hampton Roads District continues to monitor...




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Halliburton Lays Off Additional Staff in Houston

Approximately 984 employees were affected.




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London's flamboyant Olympic tower to get white-knuckle new addition

If there ever were a super-tall public sculpture begging for a tunnel slide ....



  • Arts & Culture

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Ultra high-definition TVs might use $1 billion worth of additional energy per year

But there are things you can do if you find a big 4K TV under the tree.



  • Gadgets & Electronics

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Five states unlock additional weatherization funds

New Hampshire, New Mexico, Montana, Minnesota, and Utah have completed 30% of their home weatherization projects, unlocking additional program funding.




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Chair Pockets Can Be a Great Addition to Your Classroom

Chair Pockets Can Be a Great Addition to Your Classroom Great references here. Get more here. Keywords: Dorm room organization, Dorm room organization, Seat sacks, How to decorate dorm room, Chair pocket, Stylish dorm rooms.

The post Chair Pockets Can Be a Great Addition to Your Classroom appeared first on RSS News Feed.