Recovery of pure 2-methyl-2-hydroxy-heptanone-6

Details Recovery of pure 2-methyl-2-hydroxy-heptanone-6 Recovery of pure 2-methyl-2-hydroxy-heptanone-6

1974-09-16

1976-05-18

Thomas, Jr., James O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2603451, C07C 4524

Patent

active

039577309

ABSTRACT:
A process for the recovery of pure 2-methyl-2-hydroxyheptanone-6 by conversion of impure 2-methyl-2-hydroxyheptanone-6 into 2,2,6-trimethyl 2,3-hydro-4-H-pyran by treatment with an acid which is not volatile under the reaction conditions at a temperature of from 30.degree. to 150.degree.C, purification of the 2,2,6-trimethyl-2,3-hydro-4-H-pyran thus obtained by distillation, reaction of the purified 2,2,6-trimethyl-2,3-hydro-4-H-pyran with water in the presence of an acid ion exchanger and removal of the excess water from the aqueous solution of 2-methyl-2-hydroxyheptanone-6 thus obtained by distillation. 2-methyl-2-hydroxyheptanone-6 is suitable for the production of 2-methyl-2-hydroxy-6-aminoheptane which is effective as a pharmaceutical for conditions of the heart and circulation.

REFERENCES:
patent: 3686321 (1972-08-01), Mueller et al.
Hickenbottom, "Reactions of Organic Compounds," pp. 136-143 (1957).

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