Synthesis of diazaphosphacycles

Details Synthesis of diazaphosphacycles Synthesis of diazaphosphacycles

2008-04-08

2008-04-08

Epperson, Jon D. (Department: 1639)

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

C502S155000, C502S213000, C502S326000

Reexamination Certificate

active

07355073

ABSTRACT:
A diazaphosphacycle may be synthesized by reacting a phosphine with a diimine and optionally one or more equivalents of an acid halide, a sulfonyl halide, a phosphoryl halide, or an acid anhydride in the substantial absence of O2to form the diazaphosphacycle. The phosphine has the formula R1—PH2where R1is a substituted or unsubstituted aryl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted cycloalkyl group, or a substituted or unsubstituted ferrocenyl group.

REFERENCES:
patent: WO 91/17988 (1991-11-01), None
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