Abstract
Reaction of formaldehyde diethylacetal with resorcinol 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 αmethylaminoacetic aldehyde dimethylacetal (I) in aqueous solutions of hydrochloric acid led to the formation of hydrochlorides of substituted polyphenolic products originating from two resorcinol and one aminoacetal molecules [5].
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