Process for the manufacture of 2,2,4,4-tetramethylcyclobutanedio

Details Process for the manufacture of 2,2,4,4-tetramethylcyclobutanedio Process for the manufacture of 2,2,4,4-tetramethylcyclobutanedio

1993-02-01

1993-11-02

Siegel, Alan

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

Organic compounds

Oxygen containing

568301, 568338, C07C 29145

Patent

active

052585565

ABSTRACT:
Disclosed is a novel process for the manufacture of 2,2,4,4 tetramethylcyclobutane 1,3 diol commencing with the pyrolysis of isobutyric anhydride to produce dimethylketene. Dimethylketene is absorbed into 2,2,4,4 tetramethylcyclobutane 1,3 dione which function as the process solvents for subsequent dimerization of the dimethylketene to 2,2,4,4-tetramethylcyclobutane-1,3 -dione followed by the catalytic hydrogenation of the dione to the diol product.

REFERENCES:
patent: 5169994 (1992-12-01), Sumner et al.

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