Process for producing 3-methyl-2-pentyl-cyclopent-2-en-1-one

Details Process for producing 3-methyl-2-pentyl-cyclopent-2-en-1-one Process for producing 3-methyl-2-pentyl-cyclopent-2-en-1-one

1989-11-15

1992-08-04

Reamer, James H.

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

Organic compounds

Oxygen containing

C07C 4500

Patent

active

051361000

ABSTRACT:
A process for producing 3-methyl-2-pentylcyclopent-2-en-1-one by cyclodehydration of .gamma.-methyl-.gamma.-decalatone, which comprises heating .gamma.-methyl-.gamma.-decalactone at a temperature effective for said cyclodehydration in the presence of an effective amount of phosphoric acid as a catalyst, and a mineral oil having a boiling point which is higher than that of said starting material and said product, and removing said product from the reaction mixture.

REFERENCES:
patent: 3953514 (1976-04-01), Yamazaki
Rai et al, J. Ind. Chem. Soc., vol. 34, p. 178 (1975).
Eaton et al, J. Org. Chem., vol. 38, p. 4071 (1973).
Patent Abstracts of Japan, Band 7, No. 285 (C-201) [1430], Dec. 20, 1983.

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