作者:Shane Plunkett、Lindsey G. DeRatt、Scott D. Kuduk、Jaume Balsells
DOI:10.1021/acs.orglett.0c02851
日期:2020.10.2
method for the rapid preparation of substituted isocoumarins is reported. The transformation takes advantage of a spontaneous intramolecular cyclization that follows the Pd-catalyzed α-arylation of aldehydes with 2-halobenzoic esters. The reaction uses an air-stable, single-component palladium catalyst and provides access to 4-alkylated isocoumarins in one step from commercial starting materials. The
报道了一种快速制备取代的异香豆素的收敛方法。该转化利用了自发的分子内环化作用,该环化作用是钯与2-卤代苯甲酸酯在钯催化的α-芳基化反应之后进行的。该反应使用空气稳定的单组分钯催化剂,一步即可从市售原料中获得4-烷基化异香豆素。还证明了同时使用环状和线性酮以及异香豆素核心转化的方法的适用性。