5-bromo-cyclohepta[hi]pyrrolo[2,1,5-cd]indolizines. The dehydrobromination of 4 with DBU afforded cyclohepta[hi]pyrrolo[2,1,5-cd]indolizines in good yields. The characteristic electronic features of these cycloheptapyrroloindolizines are discussed on the basis of the MO calculations and the spectroscopic properties.
4,5,6,7-四氢环庚并[hi]
吡咯并[2,1,5-cd]indolizines的亚甲基部分用
NBS氧化得到5-
溴-6,7-二氢-(4)和5-
溴-
环庚烷[hi]
吡咯并[2,1,5-cd]
吲哚嗪。4 与
DBU 的脱
溴化氢以良好的产率得到环庚 [hi]
吡咯并 [2,1,5-cd]
吲哚嗪。在 MO 计算和光谱性质的基础上讨论了这些环庚
吡咯并
吲哚嗪的特征电子特征。