Gallium-Mediated Highly Regioselective Reaction of Allyl-Type Bromide and Propargyl-Type Bromide With Aldehyde
作者:Ying Han、Zhengfa Chi、Yao-Zeng Huang
DOI:10.1080/00397919908086104
日期:1999.4
In the presence of potassium iodide and lithium chloride, the one-pot reaction of gallium powder, allyl-type bromide and aldehyde shows very high selectivity favoring alpha-adducts. Under the same condition, the reaction of propargylic bromide with aldehyde exhibit high acetylenic selectivity.
Stereoselective addition of allylstibonium bromide to aldehydes
Reaction of allylantimony with aldehydes provides homoallylic alcohols with high threo selectivity in the case of (E)-4-methyl-2-pentenylantimony (2c) and with preferential erythro selectivity in the case of crotylantimony (2a).