Stereoselective synthesis of versatile 2-chloromercurium-3,5-syn-dihydroxy esters via intramolecular oxymercuration
作者:Carlo Bonini、Maria Campaniello、Lucia Chiummiento、Valeria Videtta
DOI:10.1016/j.tet.2008.06.094
日期:2008.9
Regio- and stereocontrolled alkoxy mercuration of α,β-unsaturated esters allows direct access to 1,3-syn diols in good yields. Demercuration of adducts leads to 1,3 skipped dihydroxy esters, alcohols, and α-halo esters. The deprotection of acetonide with Amberlyst 15 on 1,3-syn-dihydroxy esters gives the corresponding δ-lactones.
α,β-不饱和酯的区域和立体控制的烷氧基汞基可以良好的产率直接获得1,3-合成二醇。加合物的脱汞导致1,3个跳过的二羟基酯,醇和α-卤代酯。用Amberlyst 15在1,3-顺式-二羟基酯上对丙酮化物进行脱保护得到相应的δ-内酯。