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Novartis AG
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JR Geigy AG
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Publication of ES273147A1publicationCriticalpatent/ES273147A1/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
The invention comprises 3-nitro-5-acyliminodibenzyls and their preparation by reacting a 5-acyl-iminodibenzyl with a substantially equimolar amount of nitric acid in sulphuric acid. Acyl radicals referred to are those of alkanoic acids and benzoic acid. Examples are given, and the reduction of the products to 3-amino-5-acyliminodibenzyls is described and exemplified. Specification 942,429 is referred to.
ES0273147A1960-12-221961-12-21Nitro derivatives of iminodibenzyls and process for their preparation
ExpiredES273147A1
(en)
Process for the preparation of alpha-amino- or azido-substituted 7-phenyl-acetamido-cephalosporanic acids using trialkylsilyl derivatives of 7-aminosephalosporanic acid as starting material