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Synthesis of Aminopyridazines from Azidopyridazines and Tetrazolo[1,5- b ]pyridazines

1989; Thieme Medical Publishers (Germany); Volume: 1989; Issue: 09 Linguagem: Inglês

10.1055/s-1989-27352

1437-210X

Th. Kappe, A. Pfaffenschlager, Wolfgang Stadlbauer,

Quinazolinone synthesis and applications

Azidopyridazines 3, 4, 24 and tetrazolo[1,5-b]pyridazines 10, 13, 28 can be converted to the corresponding aminopyridazines, by reaction with triphenylphosphine via phosphazenes and subsequent hydrolysis (Staudinger reaction).