Tertiary phosphines and their methods of preparation

Details Tertiary phosphines and their methods of preparation Tertiary phosphines and their methods of preparation

2004-03-08

2009-10-27

Eyler, Yvonne (Department: 1621)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C548S413000, C568S012000

Reexamination Certificate

active

07608713

ABSTRACT:
Tertiary phosphines are prepared by reacting a phosphine (PH3or a primary or secondary phosphine) with a cyclic alpha,beta-unsaturated carbonyl compound having no more than one C═C double bond conjugated with a carbonyl group. The inventive tertiary phosphines can have R groups that are the same or different. The inventive tertiary phosphines may be used as ligands for metal catalysts or as starting materials for preparing phosphonium salts or ylids.

REFERENCES:
patent: 0184872 (1986-06-01), None
Zabotina et al., Synthesis of 4,4-dimethyl-3,5-bis(diphenylphosphino)cyclohexanone, Tetrahedron, 57 (2001) 10177-10180.
Couret et al., Addition of germyl- and silylphosphines to a-ethylenic aldehydes and ketones, Journal of Organometallic Chemistry (1975), 91(1), 11-30.
Van Doorn et al., Addition of diphenylphosphine to maleic anhydride and related compounds, Phosphorus, Sulfur and Silicon and the Related Elements (1990), 47(3-4), 253-60.
Issleib et al., Alkali-phosphorus compounds and their reactive behavior. LXXI. Synthesis and reaction behavior of (3-oxoalkyl)-organophosphines, Phosphorus and the Related Group V Elements (1973), 3(4), 141-52, Abstract.

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