2-Spiroanellated 1,3-Benzodioxoles from the Reaction of 2,3-Dihydro-lH-pyrrol-3-ones with Tetrachloro-1,2-benzoquinone

摘要

Novel spiro[l,3-benzodioxole-2,2'-(2',3'-dihydro-1'H-pyrrol-3'-ones)] were obtained from 2-aminomethylene-2,3-dihydropyrrol-3(lH)-ones and tetrachloro-l,2-benzoquinone in ethanol at room temperature.However,in addition,3,4-dichloro-7-methoxy-5-(4-methoxyphenyl)-5,10-dihydrophena-zine-l,2-dione was formed in the reaction of l-(4-methoxyphenyl)-2-(4-methoxyphenylaminornethy-lene)-4,5-diphenyl-1,2-dihydropyrrol-3-one with tetrachloro-1,2-benzoquinone.