Regio‐, Diastereo‐, and Enantioselective Decarboxylative Hydroaminoalkylation of Dienol Ethers Enabled by Dual Palladium/Photoredox Catalysis
作者:Jun Zheng、Nana Tang、Hui Xie、Bernhard Breit
DOI:10.1002/anie.202200105
日期:2022.5.9
(HAA) reaction of N-aryl α-amino acids with dienol ethers enabled by a photoredox/palladium dual catalytic system is presented. With the developed method, a broad variety of substrates was deployed to deliver vicinal amino tertiary ethers in good to excellent yields with excellent diastereo-, and enantioselectivity. Mechanistic studies suggest that this transformation proceeds through a reversible
Direct conversion of amino acids to oxetanol bioisosteres <i>via</i> photoredox catalysis
作者:Avelyn Mae V. Delos Reyes、Christopher S. Nieves Escobar、Alberto Muñoz、Maya I. Huffman、Derek S. Tan
DOI:10.1039/d3sc00936j
日期:——
Carboxylic acids are an important structural feature in many drugs, but are associated with a number of unfavorable pharmacological properties. To address this problem, carboxylic acids can be replaced with bioisosteric mimics that interact similarly with biological targets but avoid these liabilities. Recently, 3-oxetanols have been identified as useful carboxylic acid bioisosteres that maintain similar
Dual Palladium/Photoredox-Catalyzed Enantioselective and Regioselective Decarboxylative Hydroaminoalkylation of Allenes
作者:Jun Zheng、Ali Nikbakht、Bernhard Breit
DOI:10.1021/acscatal.1c00153
日期:2021.3.19
atalyzed regio- and enantioselective decarboxylative hydroaminoalkylation of allenes with amino acids is reported. This mild, redox-neutral, and atom-economic process allows access to a range of protected vinyl 1,2-amino ethers in good yields with high levels of branched and enantioselectivity, when alkoxyallenes were employed. Conversely, with alkyl- and aryl-substituted terminalallenes as the substrates