Process for the production of cyclopropylmethylketone

Details Process for the production of cyclopropylmethylketone Process for the production of cyclopropylmethylketone

1992-09-18

1993-10-19

Reamer, James H.

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

Organic compounds

Oxygen containing

C07C 4567

Patent

active

052547396

ABSTRACT:
A process is described for the production of the known intermediate cyclopropylmethylketone which delivers a high yield, few side products, high reaction efficiency and turnover, and is more viable practically and commercially. In the presence of an excess of a Periodic Table Group I or Group II metal halide or quaternary phosphonium halide, .alpha.-acetyl-.gamma.-butyrolactone is led continuously into a reaction vessel at 170.degree.-200.degree. C. and cyclopropylmethylketone distilled off continuously. The halide is recovered and recycled in the process.

REFERENCES:
Takei et al., Tet. Letters, vol. 49, pp. 4389-4392 (1975).
Asaoka et al., Chemical Letters, vol. 11, pp. 1149-1152 (1975).

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