Well‐defined Cp*Co(III)‐catalyzed Hydrogenation of Carbonates and Polycarbonates DOI

Pardeep Dahiya,

Manoj Kumar Gangwar, Basker Sundararaju

et al.

ChemCatChem, Journal Year: 2020, Volume and Issue: 13(3), P. 934 - 939

Published: Nov. 19, 2020

Abstract We herein report the catalytic hydrogenation of carbonates and polycarbonates into their corresponding diols/alcohols using well‐defined, air‐stable, high‐valent cobalt complexes. Several novel Cp*Co(III) complexes bearing N , O ‐chelation were isolated for first time structurally characterized by various spectroscopic techniques including single crystal X‐ray crystallography. These Co(III) have shown excellent activity to produce value added from carbonate through molecular hydrogen as sole reductant or i PrOH transfer source. To demonstrate developed methodology's practical applicability, we recycled bisphenol A monomer compact disc (CD) under established reaction conditions phosphine‐free, earth‐abundant, air‐ moisture‐stable catalysts.

Language: Английский

Well‐Defined Ni−SNS Complex Catalysed Borrowing Hydrogenative α‐Alkylation of Ketones and Dehydrogenative Synthesis of Quinolines DOI
Rahul Sharma, Avijit Mondal,

Arup Samanta

et al.

Advanced Synthesis & Catalysis, Journal Year: 2022, Volume and Issue: 364(14), P. 2429 - 2437

Published: May 23, 2022

Abstract The “borrowing hydrogen” (BH) method for C‐alkylation reactions using alcohol as alkylating agents is an important synthetic transformation. In this respect, designing cheap and bench stable earth abundant metal catalyst borrowing hydrogen transformation a key challenge to be witnessed. Herein we have presented synthesis of non‐phosphine, easily accessible SNS−Ni complexes. Ni‐catalyst was successfully applied the ketone enolates α‐alkylated ketones. Primary with different functional groups various heteroaromatic alcohols are well tolerated. present system efficiently gram scale also green chemistry metrics reaction were calculated. protocol extended biologically quinoline moieties. Finally, control experiments deuterium labelled suggest that proceeds via pathway. magnified image

Language: Английский

Citations

24
NNN manganese complex-catalyzed α-alkylation of methyl ketones using alcohols: an experimental and computational study DOI
Sachin Jalwal,

Anitta Regina,

Vaishnavi Atreya

et al.

Dalton Transactions, Journal Year: 2024, Volume and Issue: 53(7), P. 3236 - 3243

Published: Jan. 1, 2024

A quinoline-based pincer Mn catalyst for α-alkylation of methyl ketones using primary alcohols as alkyl surrogates is presented. The C–C bond formation reaction proceeds via a hydrogen auto-transfer protocol, generating water the only by-product.

Language: Английский

Citations

6
CrCl2-catalyzed α-alkylation of carbonyl compounds via a borrowing hydrogen approach DOI

Dongyue Wei,

Baojin Feng,

Qing Chen

et al.

Organic Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 11(7), P. 1955 - 1962

Published: Jan. 1, 2024

A new and efficient catalytic system for sustainable α-alkylation of carbonyl compounds with alcohols via a borrowing hydrogen strategy is presented.

Language: Английский

Citations

6
Ligand-tuned cobalt-containing coordination polymers and applications in water DOI

Rong Tao,

Yike Yang, Haiyan Zhu

et al.

Green Chemistry, Journal Year: 2020, Volume and Issue: 22(23), P. 8452 - 8461

Published: Jan. 1, 2020

Co-CIA could realize the alkylation of ketones and alcohols, alcohols without extra bases organic solvents, while Co-NCIA was effective for synthesis 1-benzyl-2-aryl-1H-benzo[d]imidazoles from various phenylenediamine benzyl in water.

Language: Английский

Citations

36
Well‐defined Cp*Co(III)‐catalyzed Hydrogenation of Carbonates and Polycarbonates DOI

Pardeep Dahiya,

Manoj Kumar Gangwar, Basker Sundararaju

et al.

ChemCatChem, Journal Year: 2020, Volume and Issue: 13(3), P. 934 - 939

Published: Nov. 19, 2020

Abstract We herein report the catalytic hydrogenation of carbonates and polycarbonates into their corresponding diols/alcohols using well‐defined, air‐stable, high‐valent cobalt complexes. Several novel Cp*Co(III) complexes bearing N , O ‐chelation were isolated for first time structurally characterized by various spectroscopic techniques including single crystal X‐ray crystallography. These Co(III) have shown excellent activity to produce value added from carbonate through molecular hydrogen as sole reductant or i PrOH transfer source. To demonstrate developed methodology's practical applicability, we recycled bisphenol A monomer compact disc (CD) under established reaction conditions phosphine‐free, earth‐abundant, air‐ moisture‐stable catalysts.

Language: Английский

Citations

35