Download PDF
Synthesis 1991; 1991(8): 658-660
DOI: 10.1055/s-1991-26538
paper
© Georg Thieme Verlag, Rüdigerstr. 14, 70469 Stuttgart, Germany. All rights reserved. This journal, including all individual contributions and illustrations published therein, is legally protected by copyright for the duration of the copyright period. Any use, exploitation or commercialization outside the narrow limits set by copyright legislation, without the publisher's consent, is illegal and liable to criminal prosecution. This applies in particular to photostat reproduction, copying, cyclostyling, mimeographing or duplication of any kind, translating, preparation of microfilms, and electronic data processing and storage.

Synthesis of 3-Amino-6-dimethylamino-4-oxopyrazolo[3,4-d] [1,3]oxazine Derivatives

Richard Neidlein* , Zhihua Sui
  • *Pharmazeutisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 364, D-6900 Heidelberg, Germany
Further Information

Publication History

Publication Date:
29 April 2002 (online)

  PDF Download  Permissions and Reprints All articles of this category

3-Amino-1-aryl-6-dimethylamino-4-oxo-1,4-dihydropyrazolo[3,4-d][1,3] oxazines 4a-7a and 3-amino-2-aryl-6-dimethylamino-4-oxo-2,4-dihydropyrazolo [3,4-d][1,3]oxazines 4b-6b were synthesized from 4-chloro-5-cyano-2-dimethylamino-6-oxo-6H-1,3-oxazine 2 and arylhydrazines in good yields. The substituent effect of the arylhydrazines on the yields of products was clearly observed.