Palladium-Catalyzed Azathiolation of Carbon Monoxide
摘要:
A novel palladium-catalyzed azathiolation of carbon monoxide using sulfenamide (RSNR'(2)) (1) is described to provide thiocarbamate 2 in good yields. The mechanistic proposal includes the following: (1) insertion of CO into Pd-S bond of Pd(SR)(2)(PPh3)(n) 4 to provide Pd[C(O)SR](SR)-(PPh3)(n) 5 and (2) sigma-bond metathesis between S-N and Pd-C(O) bonds to afford 2 with the regeneration of 4.
The Regio- and Stereoselective One-Pot Catalytic Preparation of β-Selenyl Acrylamides
作者:Daniel J. Knapton、Tara Y. Meyer
DOI:10.1021/ol036305a
日期:2004.3.1
Pd(PPh(3))(4) is found to catalytically assemble sulfenamides, terminal aliphatic alkynes, carbon monoxide, and diphenyl diselenides regio- and stereoselectively in a single-pot reaction to produce good yields of beta-selenyl acrylamides. [reaction: see text]