Allylgallation of cyclopropenes with allylgallium sesquibromide has been investigated; a novel cyclopropylgallium compound was isolated via allylgallation of hydroxy-bearing cyclopropene, and its structure was fully characterized by X-ray crystallography.
Stereodivergent allylindation of cyclopropene derivatives has been realised regio- and stereoselectively. The coupling occurs exclusively at the γ-carbon of allylic indium reagents and the more substituted carbon of the cyclopropene double bond. The carboxyl and hydroxymethyl groups on the cyclopropene C3-carbon exert significant effects in cis-direction and acceleration of the allylindation based
A stereoselective synthesis of halocyclopropanes has been achieved via halogenation of the cyclopropylindium reagents prepared from allylindation of cyclopropenes.
通过卤化由环丙烯烯丙基化制备的环丙基铟试剂,可以实现卤代环丙烷的立体选择性合成。
Cis double allylation of cyclopropenes using cyclopropylindium reagents
The successive double allylation of cyclopropenes with allylindium sesquiiodide and allyl iodide proceeded with a cis-addition mode in the presence of other organometallics (e.g. Grignard reagent, cuprate, Et2Zn and Et3Al), giving the corresponding cis-diallylcyclopropanes in high yields.