Dealkylation of 4-phosphorylated 5-alkox
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A. A. Tolmachev; A. I. Konovets; A. N. Kostyuk; A. N. Chernega; A. M. Pinchuk
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Article
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1998
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John Wiley and Sons
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English
โ 229 KB
## The chlorination of 5-alkoxypyrazoles containing bis-(dialkylamino)-or diphenylphosphino groups at the 4-position afforded highly unstable chlorophosphonium chlorides that dealkylated giving chlorobis(dialkylamino)-and chlorodiphenylphosphonium(3methyl-5-oxo-1-phenyl-5H-pyrazol-4-yl)ides. The Pch