Method for the cyclization of gamma-delta, or delta-epsilon unsa

Details Method for the cyclization of gamma-delta, or delta-epsilon unsa Method for the cyclization of gamma-delta, or delta-epsilon unsa

1979-10-04

1981-08-18

Raymond, Richard

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

26034611, C07D30716, C07D30904

Patent

active

042845670

ABSTRACT:
In the cyclization of gamma-delta or delta-epsilon unsaturated alcohols in order to obtain certain tetrahydrofuran and tetrahydropyran derivatives which are useful in the perfuming of detergents, the improvement consisting in that the alcohol to be cyclized is reacted with a cationic ion-exchange resin. The useful temperature range is from 20.degree. C. to 150.degree. C.: in practice the alcohol and the resin are boiled together or refluxed until the reaction is completed. A number of examples is reported and physicochemical data are given.

REFERENCES:
Colonge et al., Bulletin de la Societe Chimique de France, 1962, pp. 177-182.

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