Effects of catalysts on the cyclization of 2-diazo-2-methoxycarbonyl-N-aryl-N-alkylethanamides
Abstract
Inorganic solids have pronounced effects on the product distribution from decomposition of the title compounds; zeolite Kβ is particularly useful for directing the synthesis of indolinones such as 5-methoxy-N-methylindolin-2-one, which is formed in 89% yield from 2-diazo-2-methoxycarbonyl-N-(4-methoxyphenyl)-N-methylethanamide; speculation is made about a possible mechanism.