Reactions of 2-Benzoselenopyrylium Salts with Hydrazine : A New Easy Access to 5H-2,3-Benzodiazepines

Abstract

While the solvent-free reactions of the 2-benzoselenopyrylium salts (9) with methyl- or phenylhydrazine afforded the 1-hydrazino-1H-isoselenochromenes (11, 12), the treatment of the salts (9) with anhydrous hydrazine in dry acetonitrile resulted in a ring transformation to give the 5H-2,3-benzodiazepines (13) in one-pot under mild conditions in moderate yields.

Journal

Chemical & pharmaceutical bulletin   [List of Volumes]

Chemical & pharmaceutical bulletin 53(1), 60-63, 2005-01-01  [Table of Contents]

The Pharmaceutical Society of Japan

References:  19

You must have a user ID to see the references.If you already have a user ID, please click "Login" to access the info.New users can click "Sign Up" to register for an user ID.

Preview

Preview

Codes

  • NII Article ID (NAID) :
    10016651495
  • NII NACSIS-CAT ID (NCID) :
    AA00602100
  • Text Lang :
    ENG
  • Article Type :
    ART
  • ISSN :
    00092363
  • NDL Article ID :
    7200816
  • NDL Source Classification :
    ZS51(科学技術--薬学) // ZP1(科学技術--化学・化学工業)
  • NDL Call No. :
    Z53-D167
  • DOI :
    10.1248/cpb.53.60
  • Databases :
    CJP  NDL  NII-ELS  J-STAGE