Regioselective Ruthenium Catalyzed Hydrohydroxyalkylation of Dienes with 3-Hydroxy-2-oxindoles: Prenylation, Geranylation, and Beyond
摘要:
The direct conversion of secondary to tertiary alcohols via ruthenium(0) catalyzed C-C coupling of substituted 3-hydroxy-2-oxindoles with various dienes is described. Coupling occurs in a completely regioselective manner in the absence of stoichlometric byproducts.
Silyl-Group-Directed Linear-Selective Allylation of Carbonyl Compounds with Trisubstituted Allylboronates Using a Copper(I) Catalyst
作者:Hiroaki Iwamoto、Yuta Hayashi、Yu Ozawa、Hajime Ito
DOI:10.1021/acscatal.9b05408
日期:2020.2.21
A copper(I)-catalyzed linear-selective allylation of carbonylcompounds with trisubstituted allylboronates has been achieved by capitalizing on the electronic and steric effects of silyl groups. This reaction provides stereodefined trisubstituted homoallyl alcohol derivatives that bear a synthetically useful alkenyl silane moiety. The results of a computational study suggested that the silyl directing