7-氧杂双环[2.2.1]庚-2,5-二烯-2,3-二甲酸二甲酯 、
N-methyl-α-phenylnitrone 以
乙醚 为溶剂,
生成 2-methyl-3ξ-phenyl-2,3,4,7-tetrahydro-4
r,7
c-epioxido-benzo[
d]isoxazole-3a
t,7a
t-dicarboxylic acid dimethyl ester 、
2-methyl-3ξ-phenyl-2,3,4,7-tetrahydro-4r,7c-epioxido-benzo[d]isoxazole-3ac,7ac-dicarboxylic acid dimethyl ester