Reaction of 1-(2,2-Dimethoxyethyl)-1-methyl-3-phenylurea with Pyrogallol

摘要

Reaction of formaldehyde diethylacetal with resor-cinol in acid medium leads to formation of a cyclic tetramer, calix[4]resorcinol [1]. In the reactions of phosphorylated acetals with resorcinol calixarenes were formed containing phosphorylalkyl or thiophosphorylalkyl groups at the bottom rim of the molecule [2-4]. The condensation of resorcinol with α-methylaminoacetic aldehyde dimethylacetal (I) in aqueous solutions of hydrochloric acid led to the formation of hydrochlorides of substituted poly-phenolic products originating from two resorcinol and one aminoacetal molecules [5].