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Activation of donor–acceptor cyclopropanes under basic conditions: ring opening of 2-(p-siloxyaryl)cyclopropane 1,1-dicarboxylates with nitro compounds and other C-nucleophiles

Org. Chem. Front., 2024, 11,6483-6494
DOI: 10.1039/D4QO01472C, Research Article
Yulia A. Antonova, Andrey A. Tabolin
A new activation mode for donor–acceptor cyclopropanes was proposed and implemented in their reaction with nitro compounds and other common C-nucleophiles.
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open

Recent developments in the ring-opening transformations of gem-difluorocyclopropanes

Org. Chem. Front., 2024, 11,6518-6533
DOI: 10.1039/D4QO01583E, Review Article
Leiyang Lv, Junqi Su, Zhiping Li
This review summarizes the advances of gem-F2CPs as fluoroallylic synthons in transition metal-catalysed ring-opening/cross-coupling reactions via single, double or no C-F bond cleavage on the last two years.
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open

Copper(II)-catalyzed synthesis of sulfonyl-functionalized quinone-fused cyclopenta[b]indoles via four-component cascade annulation

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01560F, Research Article
Hong Xu, Jie Liao, Fei Ren, Chuan-Rong Zhou, Xiao-Zhuo Liu, Yao Xiao, Dong-Wei Hang, Fuyu Li, Bei Wang, Ji-Yu Wang
Through crucial selective radical tandem process and intramolecular nucleophilic addition, a facile copper-catalyzed four-component cascade has been realized to selectively construct novel sulfonyl-functionalized quinone-fused cyclopenta[b]indole.
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open

Rh-Catalysed Hydroacyloxylation of Cyclopropenes: Regio- and Diastereoselective Synthesis of Acyloxycyclopropanes

Org. Chem. Front., 2024, Accepted Manuscript
DOI: 10.1039/D4QO01810A, Research Article
Ángel Manu Martínez, Gema Domínguez, Ines Alonso, Marta Palaín, Javier Perez-Castells
Cyclopropyl carboxylates are essential building blocks in biological and medicinal chemistry. However, their accessibility is severely limited by the need to pre-synthesise highly reactive cyclopropane derivatives. Herein, we report an...
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open

How Madhusudanan Kalaichelvan’s passion for heritage is opening new doors to the past

Apart from researching into temple history, Madhusudhanan Kalaichelvan has been creating awareness about heritage and architecture through specially-curated trips



  • History & Culture

open

Panel formed to monitor opening of treasury of Jagannath temple in Puri to meet on July 6

The last inventory of Ratna Bhandar was taken 46 years ago in 1978




open

Farmers to hold maha panchayat on September 15 and 22, ask center to open borders to Delhi




open

2 killed, 20 injured as police open fire during Assam eviction drive

Tension began after the evicted people reoccupied the cleared spaces around Thursday noon and confronted the officials; security stepped up




open

Nayana shocks Asian champ Sumire to win gold in Taiwan Athletics Open

Animesh impresses in Spain, Eldhose and Jesse strike gold in France




open

India Open under-23 athletics: Talented athletes eager to prove their worth

The athletes will look to perform well ahead of the Asian and World championships next year.




open

COP29 opens with Trump climate withdrawal looming

Countries come to Baku for the main United Nations forum for climate diplomacy after new warnings that 2024 is on track to break temperature records, adding urgency to a fractious debate over climate funding.




open

SBI MF launches Silver ETF and Fund-of-Fund; NFO opens June 27

Both investment options aim to provide returns that closely correspond to the performance of physical silver in domestic prices




open

Malabar Gold & Diamonds to open 20 new showrooms worldwide in October

The new locations will be in key markets across India, the GCC countries, and the USA, bringing the total number of showrooms worldwide to 375.



  • Gold & Silver

open

Achieving isopropenyl-enriched polyisoprene: unraveling the role of bidentate vs. tridentate iron precatalysts through ligand framework design

Dalton Trans., 2024, Advance Article
DOI: 10.1039/D4DT02659D, Paper
Sunny Sohail, Yanping Ma, Qaiser Mahmood, Zexu Hu, Yizhou Wang, Tongling Liang, Wen-Hua Sun
The coordination sphere and steric variations in iron catalysts present a fascinating strategy for adjusting monomer regio- and stereoselective enchainment, leading to the development of novel polymer structures in isoprene polymerization.
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open

Alkyl initiated ring opening polymerization of lactide by indium complexes supported by NCN pincer ligands

Dalton Trans., 2024, Advance Article
DOI: 10.1039/D4DT02603A, Paper
Takeo Iwase, Afagh Habibzadeh, Chatura Goonesinghe, Kudzanai Nyamayaro, Joseph Chang, Jason Wai-Lok Poon, Salik Hasan Rushdy, Justin Koh, Brian O. Patrick, Parisa Mehrkhodavandi
Alkyl-indium NCN pincer complexes supported by amine donors are significantly more active for lactide polymerization than the analogous imine derivatives.
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open

Switchable, chiral aluminium catalysts for ring opening polymerisations

Dalton Trans., 2024, Advance Article
DOI: 10.1039/D4DT02831G, Communication
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
David T. Jenkins, Elizabeth C. Trodden, John M. Andresen, Stephen M. Mansell, Ruaraidh D. McIntosh
A switchable, solvent-free catalytic system was developed in which Al catalysts selectively initiate either the formation of polyether or polycarbonate through the application of a PPNCl (bis(triphenylphosphine)iminium chloride) cocatalyst.
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open

Chennai Grandmasters | Chithambaram downs Arjun, throws the title race wide open

With this win, Chithambaram (3.5) has joined Iranian Tabatabaei (3.5) to trail leaders Arjun (4) and Aronian (4) by just half a point




open

McSweeney to open, Inglis also handed maiden Test call up for BGT opener

Nathan McSweeney had emerged as a strong contender for the opener's spot, earning backing from the likes of David Warner and Ricky Ponting




open

Medvedev rages in opening ATP Finals defeat to Fritz

American Fritz leads the group ahead of that clash following a surprisingly straightforward win in Turin over world number four Medvedev who exploded with anger during his below-par display




open

Bumrah to lead, Rahul likely to open in Perth if Rohit does not make it, says Gautam Gambhir

The second batch of the Indian players is leaving for Perth, but Rohit has stayed back. Uncertainty remains if Rohit will compete in the series-opener.




open

Alcaraz given Ruud awakening with defeat in ATP Finals opener




open

Border-Gavaskar Trophy: Australian opener McSweeney braces for "unique" Bumrah challenge

McSweeney was drafted into the Australia squad after a slew of impressive performances in the Sheffield Shield tournament and in the recent ‘A’ series against India




open

Jaguar Land Rover opens Open Innovation Hub in India to accelerate electrification, AI and autonomous driving

Jaguar Land Rover’s Open Innovation Hub will bring together industry, government, academia, and other parties




open

Maruti opens bookings for fourth generation Dzire

“By combining advanced powertrain options with thoughtfully curated features, the All-New Dzire is poised to deliver an exceptional experience,” an official said




open

Minister to open Heritage hotel




open

Rupee opens on flat note at 84.08 against U.S. dollar

Rupee opens flat against U.S. dollar, influenced by foreign fund outflows, strong dollar, and domestic equity trends




open

Mahindra University opens School of Design Innovation

It will allow students to be mentored by some of the best design brains from India and abroad




open

University of Southampton to open Gurgaon campus by July 2025

The new campus will offer courses across various disciplines, including business, law, engineering, and biosciences, maintaining the same standards as the UK institution.




open

University of Southampton Delhi campus opens admissions for Business, Computer Science, Economics degrees

Applications are open until November 29, 2024, with additional admission rounds planned for the 2025 entry year.




open

More coaching centres for competitive exams to be opened in State, says Higher Education Minister




open

WPP scales up investments in India, opens up new campus in Chennai

India is the fifth largest market for WPP and one of its fastest growing markets too. It also plans to add new campuses at Bangalore and Coimbatore in the coming years




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Sinner beats Fritz again in rematch of U.S. Open final, Medvedev back in contention at ATP Finals

Top-ranked Jannik Sinner has made it two wins in two matches before his home fans at the ATP Finals by beating Taylor Fritz 6-4, 6-4 in a rematch of the U.S. Open final




open

Mangalore University to host Open House

The programme scheduled on Mangalagangotri will showcasePG courses and laboratory facilities




open

Give space for open dialogue

Safe campuses cannot be built on the basis of restricting speech.




open

Rupee recovers from all-time low level, opens 25 paise higher at 83.84 against US dollar

Meanwhile, the dollar index gained 0.16 per cent to 102.85 points




open

Mechanistic differences between the Ru(II) and Zn(II)-catalyzed cross-coupling of cyclopropenes with diazo compounds: a DFT study

Catal. Sci. Technol., 2024, Advance Article
DOI: 10.1039/D4CY00995A, Paper
Tiantian Liu, Kang Lv, Xiaoguang Bao
A detailed computational study was performed to shed light on the mechanistic differences between the Ru(II) and Zn(II)-catalyzed cross-coupling of cyclopropenes with diazo compounds.
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open

A metal-free route to substituted imidazolidines via ring-opening cyclization (ROC) of activated aziridines with N-benzylanilines: DA-COP catalyzed photo-oxidative C–H activation

Catal. Sci. Technol., 2024, 14,6411-6419
DOI: 10.1039/D4CY00808A, Paper
Manish Kumar, Bharat Singh, Sugandha Singh, Indresh Verma, Kamal K. Kar, Manas K. Ghorai
A metal-free, conjugated organic polymer (TPA-PQ)-catalyzed intramolecular C–H functionalization strategy for the synthesis of imidazolidines in the presence of light and O2 is reported.
The content of this RSS Feed (c) The Royal Society of Chemistry




open

Language, culture remain hurdles as Japan opens its doors to Indian professionals

Even if companies do not insist on knowledge of Japanese, experts say Indians must learn the language and adjust to the country’s culture




open

Milan Fashion Week opens with light, ethereal yet grounded looks from Fendi, Ferretti and Marni

As the northern hemisphere started transitioning from summer to fall, Milan Fashion Week invites fashionistas to dream about the next warm weather season




open

Open spaces, jasmine tree and more

Here are two architects who have an array of interesting ideas to convert unutilised urban spaces into active public areas.




open

Google Pixel 7 & Pixel 7 Pro open for pre-orders in India

Pixel 7 and Pixel 7 Pro can be pre-ordered for ₹59,999 and ₹84,999 respectively in India




open

ASUS expands in south India, opens new store in Bengaluru

PC maker has increased its market share from 6 to 18 per cent and plans to capture 25-30 per cent of the consumer PC segment in the country




open

Indian markets open lower after Trump victory rally; IT stocks mixed 

Apollo Hospitals and Tata Steel up more than 6%, followed by HCL Tech (0.66 per cent), Coal India (0.61 per cent), and TCS (0.46 per cent)




open

Flat opening seen for Nifty, Sensex post Fed rate cut

Global markets are positive but analysts concerned over local macros




open

Farmers given training in open and protected cultivation of vegetables




open

Apple to open retail stores in Bengaluru, Pune; starts manufacturing entire iPhone 16 series locally in India

Apple announced plans to open four new retail stores in India, the iPhone-maker also announced plans to start manufacturing the entire iPhone 16 lineup locally




open

Oura Ring 4 with redesigned app and Smart Sensing platform open for pre-orders

The Oura Ring 4 is said to be more accurate and comfortable than its predecessor, and comes with a feature to better understand the user’s natural movements when taking readings




open

Samsung Galaxy Ring open for pre-reservation in India

Samsung’s Galaxy Ring that measures health metrics and is powered by AI is open for pre-reservation




open

Sony LinkBuds Open launched in India with open-ring design and IPX4 rating

LinkBuds Open features adaptive volume control which automatically optimises the volume based on surroundings




open

AirPods 4 ANC Review: Impressive Listening Experience in an Open-Ear Design

The AirPods 4 ANC, priced at ₹17,900, represents a substantial advancement in Apple’s audio technology, but there are some limitations