、
甲苯 在
aluminum (III) chloride 作用下,
以89%的产率得到Dimethyl 25,27-dihydroxy-5,17-bis(4-methylphenyl)-2,8,14,20-tetraoxa-4,6,16,18,26,28-hexazapentacyclo[19.3.1.13,7.19,13.115,19]octacosa-1(24),3(28),4,6,9,11,13(27),15,17,19(26),21(25),22-dodecaene-11,23-dicarboxylate