Cyclic phosphonates

Details Cyclic phosphonates Cyclic phosphonates

1976-06-10

1978-01-31

Raymond, Richard L.

Chemistry of carbon compounds

Dipeptides, e.g., aspartame, anserine, carnosine, etc.

260 2P, 260928, 260931, 260936, 260937, 260953, 260969, 260989, C07F 940

Patent

active

040715833

ABSTRACT:
Alcohols preferably having a pka below that of propanol-1 are heated with certain heterocyclic phosphites to give phosphonates and certain heterocyclic phosphonites, to give phosphinates. If small amounts of alcohols are employed, the products are generally polymeric in nature whereas if larger amounts of the alcohol are employed, there is generally ring opening to the simpler monomer, or isomerization to the phosphonate or phosphinate. The products are useful as fire retardants and as adhesives for glass. Pentaerythritol phosphite can be self-polymerized by such heating to form the adhesive polymer.

REFERENCES:
patent: 3257355 (1966-06-01), Bean
patent: 3515776 (1970-06-01), Baranauckas et al.
patent: 3819771 (1974-06-01), Batorewicz
patent: 3890411 (1975-06-01), Shim
patent: 3927146 (1975-12-01), Batorewicz
patent: 3978166 (1976-08-01), Hechenbleikner

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