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Preparation of some 4‐dimethylamino‐azobenzene derivatives with substituents in the 3‐ or in the 3‐ and the 5‐position

1960; Royal Netherlands Chemical Society; Volume: 79; Issue: 9 Linguagem: Inglês

10.1002/recl.19600790910

1878-7096

Annelies van Loon, P. E. Verkade, B. M. Wepster,

Chemical Synthesis and Analysis

Abstract The preparation of a number of dimethylamino‐azobenzene derivatives of the types I‐IV (see formulae below) is described. The choice of the methods of preparation depends on considerations about steric effects on mesomerism.