Process for the manufacture of alkylene carbonates

Details Process for the manufacture of alkylene carbonates Process for the manufacture of alkylene carbonates

1979-04-12

1980-10-07

Milestone, Norma I.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D31736, C07D31738

Patent

active

042267781

ABSTRACT:
A new process is disclosed for the synthesis of alkylene carbonates having from 2 to 4 carbon atoms in the chain, starting from a corresponding halohydrin having the formula: ##STR1## wherein R.sub.a, R.sub.b, R.sub.c and R.sub.d are independently hydrogen or alkyl, aryl, alkylaryl or arylalkyl radicals and where X is a halogen, characterized in that said halohydrin is reacted with a bicarbonate of a quaternary -onium compound, where "-onium" means ammonium, phosphonium, arsonium or stibonium, preferably using an organic solvent as diluent and operating in the presence of carbon dioxide.

REFERENCES:
patent: 1907891 (1933-05-01), Steimmig et al.
patent: 2766258 (1956-10-01), Malkemus
patent: 2873282 (1959-02-01), McClellan
patent: 3025305 (1962-03-01), Verdol
patent: 3535342 (1970-10-01), Emmons
patent: 3923842 (1975-12-01), Wu

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