3-(4-Chloro-benzoyl)-benzo[b]pyrrolo[1,2-d][1,4]oxazine-1,2,4-trione 、
2',5',5'-trimethyl-4',5'-dihydro-4H-spiro[naphthalene-1,3'-pyrrol]-4-one 以
苯 为溶剂,
以96%的产率得到3''-(4-chlorobenzoyl)-4''-hydroxy-1''-(2-hydroxyphenyl)-3',3'-dimethyl-2',3'-dihydrodispiro[naphthalene-1,1'-pyrrolizine-6',2''-pyrrole]-4,5',5''(1''H)-trione