A Facile Synthesis of Carboxamides by Dehydration Condensation Between Free Carboxylic Acids and Amines Using O,O'-Di(2-pyridyl) Thiocarbonate as a Coupling Reagent
Transesterification of (hetero)aryl esters with phenols by an Earth-abundant metal catalyst
作者:Jianxia Chen、E. Namila、Chaolumen Bai、Menghe Baiyin、Bao Agula、Yong-Sheng Bao
DOI:10.1039/c8ra04984j
日期:——
for the transesterification of aryl or heteroaryl esters with phenols which is a challenging and underdeveloped transformation. The simple conditions and the use of heterogeneous alkali metal catalyst make this protocol very environmentally friendly and practical. This reaction fills in the missing part in transesterification reaction of phenols and provides an efficient approach to aryl esters, which
Nickel-Catalyzed Three-Component Alkylacylation of Alkenes Enabled by a Photoactive Electron Donor–Acceptor Complex
作者:Xiaoxiang Xi、Yukun Chen、Weiming Yuan
DOI:10.1021/acs.orglett.2c01237
日期:2022.6.10
An electron donor–acceptor complex-enabled, nickel-catalyzed three-component net-reductive 1,2-alkylacylation of alkenes is developed. This conjunctive reductive acyl cross-coupling process obviates the use of an exogenous photocatalyst and a stoichiometric metal-based reductant, affording various synthetically useful 1,3-dicarbonylcompounds in good yields with a broad substrate scope and excellent
Photoredox/nickel-catalyzed enantioconvergent acylcross-coupling of carboxylic derivatives with racemic secondary organotrifluoroborate was developed for the synthesis of an enolizable chiral α-aryl ketone under mild neutral conditions. Moderate to high yields and good enantioselectivities were achieved.