Regioselektive [4+3]-cycloadditionen von heterosubstituierten allylium-2-olaten (oxallylen) an 2-methylfuran
作者:Baldur Föhlisch、Robert Flogaus、Jutta Oexle、Angelika Schädel
DOI:10.1016/s0040-4039(01)90038-3
日期:——
1,1-Dichloro- and 1,3-dichloro-2-alkanones react with 2-methylfuran in the presence of lithium perchlorate/triethylamine to form 2-chloro-1-methyl-8-oxabicyclo [3.2.1]oct-6-ene-3-ones predominantly.
1,1-二氯和1,3-二氯-2-链烷酮在高氯酸锂/三乙胺的存在下与2-甲基呋喃反应形成2-氯-1-甲基-8-氧杂双环[3.2.1] oct-6 -ene-3-ones主要。