Synthesis, crystal structure, and photophysical properties of dimethyl 7-oxa-2a1-azabenzo[b]cyclopenta[pq]pleiadene-1,2-dicarboxylate – novel fused oxazapolycyclic skeleton
作者:Petr P. Petrovskii、Olesya A. Tomashenko、Mikhail S. Novikov、Alexander F. Khlebnikov、Helen Stoeckli-Evans
DOI:10.1007/s10593-017-2144-3
日期:2017.8
Dimethyl 3-(2-bromophenyl)dibenzo[b,f]pyrrolo[1,2-d][1, 4]oxazepine-1,2-dicarboxylate and its 3,13b-dihydro and 1,2,3,13b-tetrahydro analogs undergo intramolecular cyclization under free radical conditions with the formation of dimethyl 7-oxa-2a1-azabenzo[b]-cyclopenta[pq]pleiadene-1,2-dicarboxylate, the unique representative of pyrrole-fused dibenzo[b,f][1, 4]oxazepines, consisting of six fused rings
3-(2-溴苯基)二苯并二甲基[ b,f ]吡咯并[1,2- d ] [1,4]氮杂氮杂-1,2-二羧酸酯及其3,13b-二氢和1,2,3,13b-四氢类似物在自由基条件下经历分子内环化,形成二甲基7-氧杂-2a1-氮杂苯并[ b ]-环戊[ pq ] pleiadene-1,2-二羧酸盐,吡咯稠合的二苯并[ b,f ]的唯一代表[1,4]奥氮平,由六个稠环组成。这种非平面的氧杂氮杂杂环在二氯甲烷中显示出强烈的蓝色发射。