Rhodium-Catalyzed Acylation of Vinylsilanes with Acid Anhydrides
作者:Motoki Yamane、Kazuyoshi Uera、Koichi Narasaka
DOI:10.1246/bcsj.78.477
日期:2005.3
A catalytic acylation of vinylsilane with acid anhydride is accomplished by the use of [RhCl(CO)2]2, in which the transmetalation between vinylsilane and rhodium(I) carbonyl complex plays a key rol...
Rearrangement of isoxazoline-5-spiro derivatives. Part 7. Thermal rearrangement of 4,5-dihydro and tetrahydroisoxazole-5-spirocyclobutanes to azepin-4-one derivatives
作者:Andrea Goti、Alberto Brandi、Francesco De Sarlo、Antonio Guarna
DOI:10.1016/s0040-4020(01)89026-8
日期:——
respectively. When subjected to flash vacuum thermolysis conditions, the spiranic cycloadducts rearranged to afford mainly the desired azepin-4-one derivatives. In addition, the isoxazoline cycloadducts gave unexpected by-products, which were identified as 1-alkenyl-2-pyrrolidinones. Analogies and differences with respect to the lower homologue cyclopropanes are evidenced in both cycloaddition and rearrangement
The direct chemoselective carbonylative cross-coupling reaction of allylic alcohols and organoalanes with 1 atm CO via nickel catalysis has been developed to access the β,γ-unsaturated ketones with broad scope. The use of organoalanes as both the coupling components and the activators for the alcohol functionalization was found to be both crucial and advantageous as the method does not require any
已经开发了通过镍催化烯丙醇和有机烷烃与 1 atm CO 的直接化学选择性羰基化交叉偶联反应来获得具有广泛范围的 β,γ-不饱和酮。由于该方法不需要任何外部活化剂,因此发现使用有机丙烷作为偶联组分和醇官能化的活化剂既是关键又是有利的。