Method for the cyclization of 3,7-dimethyl-3-hydroxy-...

Details Method for the cyclization of 3,7-dimethyl-3-hydroxy-... Method for the cyclization of 3,7-dimethyl-3-hydroxy-...

C - Chemistry, Metallurgy

07

D

260/358, 260/363

C07D 307/16 (2006.01) C07D 309/04 (2006.01)

Patent

CA 1085862

ABSTRACT OF THE DISCLOSURE : In the cyclization of the alcohol, 3, 7-di- methyl-3-hydroxy-6-octonenitrile for obtaining either 2,6,6-trimethyl-2-cyanomethyl tetrahydropyran or a 2-methyl- 2-cyanomethyl-5-isopropyl tetrahydrofuran or a mixture thereof which are useful in the perfuming of detergents, the improvement consisting in that the alcohol to be cy- cllized is reacted with a cationic ion-exchange resin. The reaction is carried out at a temperature in the range of from 20°C to 150°C. In practice the alcohol and the resin are boiled together or refluxed until the reaction is completed.

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