Azepines from the intramolecular Prins cyclization of an aminoderivative of lapachol
摘要:
Intramolecular Prins reaction of the 2-(2,2-dimethoxyethylamino)-3-(3-methyl-2-butenyl)-1,4-dihydro-1,4-naphthalene-6,11-dione, an amino derivative of lapachol, under hydrolytic conditions, yielded novel azepines condensed with the naphthoquinone nucleus of lapachol. (C) 2002 Elsevier Science Ltd. All rights reserved.
Secondary amines and unexpected 1-aza-anthraquinones from 2-methoxylapachol
摘要:
A series of 1-aza-anthraquinones were characterized, besides the expected N-alkylamino derivatives, from the substitution reactions of 2-metboxylapachol with primary amines. An investigation of the reaction conditions allowed reasonable selectivity in the products distribution. (C) 2001 Elsevier Science Ltd. All rights reserved.