On the coupling of aryldiazonium salts with N, N-disubstituted 2-aminothiophenes and some of their carbocyclic and heterocyclic analogues

H Hartmann, I Zug

Index: Hartmann, Horst; Zug, Ines Journal of the Chemical Society, Perkin Transactions 1, 2000 , # 24 p. 4316 - 4320

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Citation Number: 8

Abstract

As exemplified with the morpholino derivatives 7, N, N-disubstituted 2-aminothiophenes couple, depending on the substitution pattern at C (5), with aryldiazonium salts 1 either at their C (3) or C (5) position yielding the corresponding 3-arylazo-2-morpholinothiophenes 9 or, under elimination of the substituent at C (5), 5-arylazo-2-morpholinothiophenes 10. This reaction contrasts to the behaviour of 5-morpholinothiazoles 8 and dimethylaniline 13 ...