C-PHOSPHORYLATED PYRAZOLES - REACTION OF M-METHYLPYRAZOLES AND N-PHENYLPYRAZOLES WITH PHOSPHORUS(III) HALIDES

Authors
TOLMACHEV AA SVIRIDON AI KOSTYUK AN PINCHUK AM
Citation
Aa. Tolmachev et al., C-PHOSPHORYLATED PYRAZOLES - REACTION OF M-METHYLPYRAZOLES AND N-PHENYLPYRAZOLES WITH PHOSPHORUS(III) HALIDES, Heteroatom chemistry, 6(5), 1995, pp. 449-459
Citations number
28
Categorie Soggetti
Chemistry
Journal title
Heteroatom chemistry → ACNP
ISSN journal
10427163
Volume
6
Issue
5
Year of publication
1995
Pages
449 - 459
Database
ISI
SICI code
1042-7163(1995)6:5<449:CP-ROM>2.0.ZU;2-L
Abstract
The reactions of N-methyl- and N-phenylpyrazole derivatives with phosp horus (III) halides have been studied. The preparative method for synt hesis of a variety of 4-phosphorylated pyrazoles, including pyrazolyl substituted halo- and dihalophosphines, has been elaborated. Migration of an alkyl group from O to P(III) in 4-phosphorylated 5-alkoxypyrazo les was found to give a P-ylides in a vinylogous manner with respect t o the Arbuzov reaction. (C) 1995 John Wiley & Sons, Inc.