Palladium catalysed tetramolecular cascade processes incorporating allene and carbon monoxide
作者:Ronald Grigg、Stephen Brown、Visuvanathar Sridharan、Michael D. Uttley
DOI:10.1016/s0040-4039(97)01062-9
日期:1997.7
Chemo- and regio-specific palladiumcatalysed four component cascade processes, involving formation of 4 new bonds, initiated by oxidative addition of Pd(0) with aryl/heteroaryl iodides followed by sequential incorporation of CO(1 atm), allene (1 atm) and an S- or N- nucleophile[PhSO2- or (RNTs)] occur in good to excellent yield at 50°C.
Iron-Catalyzed Electrophotochemical α-Functionalization of a Silylcyclobutanol
作者:Pan Zhou、Ling Ding、Yuxiu Liu、Hongjian Song、Qingmin Wang
DOI:10.1021/acs.orglett.4c02279
日期:2024.8.30
is important in organic chemistry, and selective cleavage and functionalization of these strained rings are of great interest. However, direct α-functionalization of cyclobutanols is rarely reported because of the high O–H bond dissociation energy and the occurrence of β-scission of C–C bonds in these alcohols. Recently, transition-metal catalysis has facilitated alkoxyradical generation. Herein, we