Intramolecular Diels–Alder reaction of new building blocks, N-substituted 3,5-dihydro-1H-thieno[3,4-c]-pyrrole S,S-dioxides; a general route to the tricyclic azanorbornane framework
作者:Takayoshi Suzuki、Hiroaki Takayama
DOI:10.1039/c39950000807
日期:——
In spite of the absence of activating groups for dienophiles, N-substituted 3,5-dihydro-1H-thieno[3,4-c]pyrrole S,S-dioxides 1 which contain terminal olefin substituents, undergo facile intramolecular Diels–Alder reaction and subsequent spontaneous desulfonylation to give the corresponding tricyclic azanorbornane framework 2 in good yields.
尽管不存在亲二烯体的活化基团,但含有末端烯烃取代基的N-取代3,5-dihydro-1 H -thieno [3,4- c ]吡咯S,S-二氧化物1仍易于进行分子内Diels–Alder反应和随后的自发去磺酰化,以良好的收率得到相应的三环金刚烷烷骨架2。