Stereoselective Construction of Substituted Chromans by Palladium-Catalyzed Cyclization of Propargylic Carbonates with 2-(2-Hydroxyphenyl)acetates
摘要:
Highly substituted chromans have been constructed in a highly stereoselective manner by a palladium-catalyzed reaction of propargylic carbonates with 2-(2-hydroxyphenyl)acetates. Enantioselective reactions also successfully proceeded to give the optically active chromans with high enantioselectivity.
Stereoselective Construction of Substituted Chromans by Palladium-Catalyzed Cyclization of Propargylic Carbonates with 2-(2-Hydroxyphenyl)acetates
摘要:
Highly substituted chromans have been constructed in a highly stereoselective manner by a palladium-catalyzed reaction of propargylic carbonates with 2-(2-hydroxyphenyl)acetates. Enantioselective reactions also successfully proceeded to give the optically active chromans with high enantioselectivity.
Synthesis of Substituted Tetrahydrocyclobuta[<i>b</i>]benzofurans by Palladium-Catalyzed Substitution/[2+2] Cycloaddition of Propargylic Carbonates with 2-Vinylphenols
作者:Masahiro Yoshida、Shoko Ohno、Kosuke Namba
DOI:10.1002/anie.201306903
日期:2013.12.16
Radical methods: The title reaction proceeds in the presence of a palladium catalyst to deliver substituted tetrahydrocyclobuta[b]benzofurans in a stereoselective manner (see scheme). A radical mechanism is discussed.
自由基方法:标题反应在钯催化剂的存在下进行,以立体选择性方式递送取代的四氢环丁[ b ]苯并呋喃(参见方案)。讨论了一种根本机制。
Stereoselective Construction of Substituted Chromans by Palladium-Catalyzed Cyclization of Propargylic Carbonates with 2-(2-Hydroxyphenyl)acetates
作者:Masahiro Yoshida、Mariko Higuchi、Kozo Shishido
DOI:10.1021/ol901964z
日期:2009.10.15
Highly substituted chromans have been constructed in a highly stereoselective manner by a palladium-catalyzed reaction of propargylic carbonates with 2-(2-hydroxyphenyl)acetates. Enantioselective reactions also successfully proceeded to give the optically active chromans with high enantioselectivity.