Intermolecular CO-retained carbothiolation of alkynes using thioesters took place to afford beta-SR substituted enone derivatives; the choice of catalyst (Pd(dba)(2)-dppe) and the introduction of a CF(3) group into the thioesters are the key to achieving the transformation.
Palladium-catalyzed fluoroacylation of (Hetero)arylboronic acid with fluorothioacetates at ambient temperature
作者:Xing Yi、Ya-Fang Cao、Xing Wang、Hui Xu、Shu-Rong Ban、Hui-Xiong Dai
DOI:10.1016/j.tetlet.2020.151780
日期:2020.4
A palladium-catalyzed fluoroacylation of (hetero)aryl boronic acid with the fluorothioacetates is described at ambient temperature. A variety of aryl, and heteroaryl boronic acids are compatible in the reaction, affording the corresponding fluoroalkyl ketones in moderate to good yields. Further late-stage di-, and trifluoroacylation of drug molecule clofibrate and estrone demonstrated the synthetic practicability of this protocol.2009 Elsevier Ltd. All rights reserved. (C) 2020 Elsevier Ltd. All rights reserved.
Thiol Ester−Boronic Acid Coupling. A Mechanistically Unprecedented and General Ketone Synthesis