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1, 1-dichloroalkylphosphonates: Convenient starting materials for low-coordinated trivalent phosphorus compounds

✍ Scribed by Catherine Grandin; Elie About-Jaudet; Noël Collignon; Jean-Marc Denis; Philippe Savignac

Book ID: 102846527
Publisher: John Wiley and Sons
Year: 1992
Tongue: English
Weight: 607 KB
Volume: 3
Category: Article
ISSN: 1042-7163
DOI: 10.1002/hc.520030406

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✦ Synopsis

Diisopropyl 1,l -dichloroalkylphosphonates bearing mrious groups (alkyl, aryl, allyl, benzyl, phenylthiolate, trimethylsilyl) in the a-position were reduced to the corresponding primary I , 1 -dichlorophosphines by the LiAIH,-A~C~, system in diethyl ether. Subsequent dehydrochlorination with tertiary amines in the presence of trapping dipolar compounds (ethyl diazoacetate or n-hexylazide) led to the expected 1,2,4-diazaphospholes or 3H-1,2,3,4-triazaphospholes.

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