Methyl 2-(4-oxido-6-oxo-2,3-dihydropyrazin-4-ium-1-yl)acetate 、
5,6-didehydro-11,12-dihydrodibenzo[a,e]cyclooctene 以
氘代苯 为溶剂,
反应 0.05h,
以87%的产率得到Methyl 2-(18-oxo-23-oxa-19,22-diazapentacyclo[14.7.0.02,7.010,15.017,22]tricosa-1(16),2,4,6,10,12,14-heptaen-19-yl)acetate