Synthesis of novel spiro-[3H-indole-3,3′-[1,2,4]triazolidine]-2-ones via azomethine imines

  • Azizian J
  • Morady A
  • Soozangarzadeh S
 et al. 
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Novel spiroindoles 5 are prepared easily via a one-pot, 1,3-dipolar cycloaddition reaction of azomethine imines with isatin imines under thermal conditions. © 2002 Elsevier Science Ltd. All rights reserved.

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