Selective Catalytic Synthesis of α-Alkylated Ketones and β-Disubstituted Ketones via Acceptorless Dehydrogenative Cross-Coupling of Alcohols
作者:Dipanjan Bhattacharyya、Bikash Kumar Sarmah、Sekhar Nandi、Hemant Kumar Srivastava、Animesh Das
DOI:10.1021/acs.orglett.0c04098
日期:2021.2.5
phosphine-free pincer ruthenium(III) catalyzed β-alkylation of secondaryalcohols with primary alcohols to α-alkylated ketones and two different secondaryalcohols to β-branched ketones are reported. Notably, this transformation is environmentally benign and atom efficient with H2O and H2 gas as the only byproducts. The protocol is extended to gram-scale reaction and for functionalization of complex vitamin E
Phosphine‐Free Pincer Ruthenium‐Catalyzed <i>α</i>‐Alkylation of Ketones with Secondary Alcohols to form <i>β</i>‐Branched Ketones
作者:Dipanjan Bhattacharyya、Priyanka Adhikari、Nitumoni Hazarika、Bikash Kumar Sarmah、Animesh Das
DOI:10.1002/cctc.202300542
日期:2023.7.21
An efficient and expedient method was developed for α-alkylation of aromatic ketones with secondary alcohols to produce β-disubstituted ketones using phosphine-free pincer ruthenium complexes as the catalyst. This selective, catalytic C−C bond forming reaction proceeds with low catalyst load, catalytic amount of base under air and produces H2O as the only by-product, making the process environmentally
以无膦钳钌配合物为催化剂,开发了一种高效、便捷的芳香酮与仲醇α-烷基化生产β-二取代酮的方法。这种选择性催化 C−C 键形成反应在空气中以低催化剂负载和催化量的碱进行,并产生 H 2 O 作为唯一的副产物,使该过程环境友好且原子效率高。
[EN] NOVEL DIOXIMESTER COMPOUND, AND PHOTOPOLYMERIZATION INITIATOR AND PHOTORESIST COMPOSITION CONTAINING SAME<br/>[FR] NOUVEAU COMPOSÉ DIOXIMESTER ET AMORCEUR DE PHOTOPOLYMÉRISATION ET COMPOSITION DE RÉSINE PHOTOSENSIBLE CONTENANT CE COMPOSÉ<br/>[KO] 신규한 디옥심에스테르 화합물 및 이를 포함하는 광중합 개시제 및 포토레지스트 조성물
申请人:SAMYANG CORP
公开号:WO2016122160A1
公开(公告)日:2016-08-04
본 발명은 신규한 디옥심에스테르 화합물 및 이를 포함하는 광중합 개시제 및 포토레지스트 조성물에 관한 것이다.
Chromium-Catalyzed Cross-Coupling of Methyl Ketones with Cyclic Ketones toward the Selective Synthesis of β-Branched β,γ-Unsaturated Ketones
作者:Priyanka Adhikari、Nitumoni Hazarika、Kalishankar Bhattacharyya、Animesh Das
DOI:10.1021/acs.orglett.3c03960
日期:2024.1.12
Chromium-catalyzed cross-coupling of methyl ketones with cyclic ketones to β-branched β,γ-unsaturated ketones are reported. Interestingly, single-crossed aldol condensation products are formed, even in reactions in which a mixture of products is possible. The reaction is highly chemoselective and regioselective. This catalytic route gives a unique opportunity to integrate the chemistry of the synthetic