Organic compounds -- part of the class 532-570 series – Organic compounds – Carbonate esters
Patent
1998-08-14
1999-10-26
Ambrose, Michael G.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbonate esters
558275, 568592, C07C 6800, C07C 4160
Patent
active
059731834
ABSTRACT:
Addition of phosphine ligands can produce high yields of tetraphenoxymethane, TPM, and diphenylcarbonate, DPC, in short reaction times and improved reaction rates by a copper-induced condensation of phenol and carbon disulfide, CS.sub.2. Either aromatic or aliphatic substituted phosphine ligands can be employed. The copper(I) oxide utilization is significantly improved in reactions containing phosphine ligands, such that yields exceeding 100% tetraphenoxymethane are observed. Some of the sulfur-containing byproduct is transferred to the phosphine in the form of phosphine sulfide.
REFERENCES:
patent: 5504238 (1996-04-01), Colburn
patent: 5663406 (1997-09-01), KIng, Jr. et al.
Colborn Robert Edgar
Grade Marsha Mottel
Haitko Deborah Ann
Longley Kathryn Lynn
Ambrose Michael G.
General Electric Company
Johnson Noreen C.
Stoner Douglas E.
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