Facile access to sterically hindered aryl ketones via carbonylative cross-coupling: application to the total synthesis of luteolin
作者:B. Michael O’Keefe、Nicholas Simmons、Stephen F. Martin
DOI:10.1016/j.tet.2011.03.074
日期:2011.6
achieving the carbonylative cross-coupling of sterically hindered, ortho-disubstituted aryl ketones is reported. The commercially available PEPPSI-IPr catalyst is shown to efficiently promote the carbonylative cross-coupling of hindered ortho-disubstituted aryl iodides to give diaryl ketones; traditional phosphine catalysts are less effective. Carbonylative Suzuki-Miyaura cross-couplings provide a diverse array
Carbonylative Cross-Coupling of <i>ortho</i>-Disubstituted Aryl Iodides. Convenient Synthesis of Sterically Hindered Aryl Ketones
作者:B. Michael O’Keefe、Nicholas Simmons、Stephen F. Martin
DOI:10.1021/ol802202j
日期:2008.11.20
A mild and general protocol for the carbonylative cross-coupling of stericallyhindered ortho-disubstituted aryl iodides is reported. Carbonylative Suzuki-Miyaura couplings of a variety of aryl boronic acids provide an array of substituted biaryl ketones in modest to excellent yield. A carbonylative Negishi coupling that utilizes alkynyl nucleophiles is also described.
An addition/ring-opening reaction of aryl- and alkenylboronic acids to cyclobutanones took place in 1,4-dioxane at 100 °C in the presence of a rhodium(I) catalyst bearing tri-t-butylphosphine, affo...
芳基-和烯基硼酸与环丁酮的加成/开环反应在 1,4-二恶烷中在 100 °C 下在带有三叔丁基膦的铑 (I) 催化剂存在下发生,...