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Phosphorane, dichlorotriphenyl

The synthesis of 4//-pyrano[2,3-d]pyrimidines, a class of compounds important in crop protection, is presented in Scheme 91. Dichlorotriphenyl-phosphorane affords iminophosphorane 247 with ethyl 2-amino-4//-pyran-3-carboxylate (246). Phenyl isocyanate cyclizes under alkoxide migration to afford pyrano[2,3-d]pyrimidines (248) (90LA995). [Pg.212]

See other pages where Phosphorane, dichlorotriphenyl is mentioned: [Pg.67] [Pg.107] [Pg.155] [Pg.67] [Pg.107] [Pg.155] [Pg.267]

See also in sourсe #XX -- [ Pg.6 , Pg.58 , Pg.58 , Pg.64 , Pg.64 , Pg.67 ]

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Phosphoran

Phosphorane