作者:Stéphane Bogen、Louis Fensterbank、Max Malacria
DOI:10.1021/jo981622u
日期:1999.2.1
An efficient radical cascade involving a 5-exo-dig, a 1,6-H transfer, a 6-endo-trig, a 4-exo-dig, and a final 1,6-H transfer allows the diastereoselective construction of bicyclo[3.1.1]heptanes. The size of the R substituent at the propargylic position governs the diastereoselectivity of the 6-endo-trig step. Other parameters (acetylenic substituents, unsaturated partners,.) have been investigated
一个有效的自由基级联反应,包括5-exo-dig,1,6-H转移,6-endo-trig,4-exo-dig和最后的1,6-H转移,允许双环[]的非对映选择性构建。 3.1.1]庚烷。炔丙基位置的R取代基的大小决定了6-内-trig步骤的非对映选择性。还研究了其他参数(炔属取代基,不饱和伴侣等),并描述了级联的范围和限制。