(+/-)-2
t-phenyl-1,2-dihydro-pyrrolo[2,1,5-
de]quinolizin-2a
r,3,4,5-tetracarboxylic acid tetramethyl ester 在
溴 、
溶剂黄146 作用下,
生成
5,8-dibromo-2a,3,4,5-tetrakis-methoxycarbonyl-2-phenyl-1,2,2a,5-tetrahydro-pyrrolo[2,1,5-de]quinolizinylium; tribromoide