Process for preparing .gamma.-lactone derivatives

Details Process for preparing .gamma.-lactone derivatives Process for preparing .gamma.-lactone derivatives

1974-12-27

1976-08-17

Patten, James A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260240D, 2603407, 2603436, 2603461R, 2604109R, 260413, 260473A, 260484R, 260615A, C07D30726, C07D30728, C07D30794

Patent

active

039753816

ABSTRACT:
A process for preparing a .gamma.-lactone derivative having the formula (I) ##EQU1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6, which may be the same or different, each represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms or a phenyl group which may be substituted with a halogen atom, and R.sup.1 and R.sup.2, and R.sup.5 and R.sup.6 may, when taken together with the carbon atom to which they are attached, form a cycloalkyl group having 4 to 7 carbon atoms, and R.sup.7 represents a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, a cycloalkyl group having 4 to 6 carbon atoms or a phenyl group which may be substituted with an alkyl group having 1 to 3 carbon atoms, which comprises reacting an allylic diol with an orthocarboxylic acid ester in the presence of an acidic catalyst.

REFERENCES:
patent: 3077496 (1963-02-01), Julia
patent: 3299100 (1967-01-01), Phillips

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