Preparation of .alpha.-chloro phosphorus ylides

Details Preparation of .alpha.-chloro phosphorus ylides Preparation of .alpha.-chloro phosphorus ylides

C - Chemistry, Metallurgy

07

F

260/558.05, 260/

C07F 9/535 (2006.01)

Patent

CA 2026875

the formula I .alpha.-Chloro phosphorus ylides of (see formula I) where the Ar radicals axe identical or different aryl groups, and E is a substituent which stabilizes the ylide (I), are prepared by reacting a phosphonium salt of the formula II (see formula II) where Hal is chlorine, bromine or iodine, with a chlorinating agent, using bleaching powder as chlorinating agent.

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