作者:P. Caramella、A. Coda Corsico、A. Corsaro、D. Del Monte、F. Marinone Albini
DOI:10.1016/0040-4020(82)85063-1
日期:1982.1
Cycloadditions of benzonitrile oxide and mesitonitrile oxide to N-methylindole and indole yield the acid sensitive cycloadducts 1 a-d with high regioselectivity. With N-carbethoxyindole the stable cycloadducts 1 e,f and minor amounts of the regioisomeric 2 e,f are isolated. The electron withdrawing substituent reduces both the regioselectivity and the reactivity of the cycloadditions.