49638-94-0Relevant articles and documents
α-Aminoalkyl-4-hydroxy-3-alkylsulfonylmethylbenzyl alcohols having β-adrenergic stimulant activity
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, (2008/06/13)
α-Aminoalkyl-4-hydroxy-3-alkylsulfonylmethylbenzyl alcohols having β-adrenergic stimulant activity, particularly as selected bronchodilators, are prepared from 4-hydroxyphenones by conversion to a 3-alkylsulfonylmethylphenone, bromination of these phenones and treatment of the resulting α-bromo derivatives with an N-benzyl secondary amine, followed by catalytic hydrogenation to remove the benzyl groups and reduce the ketone moiety.
N,N'-BIS[2-3-SUBSTITUTED-4-HYDROXYPHENYL)-2-HYDROXYETHYL)]-POLYMETHYLENEDIAMINES
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, (2008/06/13)
N,N'-Bis 2-(3-substituted-4-hydroxyphenyl)-ethyl or-2-hydroxyethyl!-polymethylenediamines having β-adrenergic stimulant activity particularly as selective bronchodilators, are prepared generally by condensation of an N-benzylphenethylamine with a polymethylene dihalide or by reaction of an α-bromoacetophenone with an N,N'-dibenzyl-polymethylenediamine, with further operations depending on the nature of the 3-substituent, and subsequently hydrogenating catalytically with for example palladium-on-carbon. The key intermediates are also part of the invention.