General Methodology for the Preparation of Unsymmetrical α-Linked Bisenones via Ligandless Cross-Coupling Reactions
作者:David R. Williams、Seth A. Bawel
DOI:10.1021/acs.orglett.7b00497
日期:2017.4.7
A stereocontrolled Stillecross-coupling reaction, involving the use of Pd2dba3, provides a general procedure for the synthesis of unsymmetrical α-linked bisenone systems. The transformation is achieved in the absence of phosphine ligands under conditions that promote the stabilization of “ligandless” palladium catalysis. The extension of these studies illustrates Suzuki–Miyaura reactions of 2-bor
The preparation of imides via the palladium-catalyzed coupling reaction of organostannanes is described. The palladium-catalyzed coupling reaction of aryl-, heteroaryl-, and alkenyl(tributyl)stannanes with methyl N-[methoxy(methylthio)methylene]carbamate in the presence of Cu(I) thiophene-2-carboxylate (CuTC) affords imino ethers, which are converted to the corresponding imides in high yield through acid hydrolysis.