Chemodivergent Synthesis of One-Carbon-Extended Alcohols via Copper-Catalyzed Hydroxymethylation of Alkynes with Formic Acid
作者:Xin Jin、Hong-Chen Fu、Mei-Yan Wang、Shouying Huang、Yue Wang、Liang-Nian He、Xinbin Ma
DOI:10.1021/acs.orglett.1c01473
日期:2021.7.2
efficient synthesis of alcohols is a long-standing goal of chemical research. Here an intriguing strategy for the chemodivergent copper-catalyzed hydroxymethylation of alkynes with formic acid and hydrosilane has been developed. By simply tuning the amount of formic acid and reaction temperature, distinct one-carbon-extended primary alcohols, that is, allylicalcohols and β-branched alkyl alcohols, were
Asymmetric rearrangement of racemic epoxides catalyzed by chiral Brønsted acids
作者:Minyang Zhuang、Haifeng Du
DOI:10.1039/c3ob27285k
日期:——
This paper describes a chiral Brønsted acid catalyzed asymmetric 1,2-rearrangement of racemic epoxides via a hydrogen-shift process for the synthesis of chiral aldehydes, and, followed by a reduction, a variety of opticallyactive alcohols can be furnished in moderate yields with up to 50% ee. Especially, a facile one-pot synthesis of chiral alcohols directly from simple alkenes by a sequential epoxidation
Highly regio- and enantioselective catalytic asymmetric hydroboration of α-substituted styrenyl derivatives
作者:Clément Mazet、David Gérard
DOI:10.1039/c0cc01547d
日期:——
The catalytic asymmetric hydroboration of a variety of 1,1-disubstituted olefins has been achieved with excellent yields, perfect regioselectivity and in some cases, high levels of enantioselectivity using readily accessible iridium catalyst.
nickel/photoredox-catalyzed enantioselectivereductive cross-coupling of racemic α-chloro thioesters with aryl iodides has been developed. This strategy avoids the need for organometallic reagents or stoichiometric metal reductants. This reaction could tolerate a wide range of substrate scope with excellent reactivity and high enantioselectivities (up to 91% ee) to access a variety of chiral α-aryl thioesters