Process for preparing carboxylic acid esters of dicyclopentadien

Details Process for preparing carboxylic acid esters of dicyclopentadien Process for preparing carboxylic acid esters of dicyclopentadien

1981-04-24

1983-06-28

Shippen, Michael L.

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

Organic compounds

Carboxylic acid esters

C07L 6738

Patent

active

043907172

ABSTRACT:
A process for preparing a carboxylic acid ester of a dicyclopentadiene by reacting the dicyclopentadiene with carbon monoxide and an alcohol in the presence of a cobalt compound catalyst, characterized by carrying out said reaction in the presence of 0.5 mole or more of a pyridine base per mole of the dicyclopentadiene at a temperature of 130.degree. C. or less at a carbon monoxide pressure of preferably at least 20 kg/cm.sup.2. G to hydroesterify the double bond in the norbornene ring, thereby forming a mono-carboxylate of a dicyclopentadiene, and hydroesterifying the monoesterification product as produced or the isolated monoester to the same reaction conditions as above except that the temperature is 160.degree. C. or less to hydroesterify the remaining double bond of the monoester, thereby forming a dicarboxylate of dicyclopentadiene.

REFERENCES:
patent: 2448368 (1946-08-01), Gresham
patent: 3507891 (1970-04-01), Hearne
patent: 3891683 (1975-06-01), Isa
patent: 3946055 (1976-03-01), Isa
patent: 3980683 (1976-09-01), Isa
patent: 3996164 (1976-12-01), Matsuda
patent: 4048147 (1977-09-01), Arakawa et al.
Falbe, "Carbon Monoxide in Organic Synthesis," pp. 86, 78-85, 99-112 & 177-205, (1970).

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