Method for preparing acetylene alcohols and their secondary...

Details Method for preparing acetylene alcohols and their secondary... Method for preparing acetylene alcohols and their secondary...

2005-10-18

2005-10-18

Price, Elvis O. (Department: 1621)

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

Organic compounds

Oxygen containing

C568S861000, C568S855000, C568S856000, C568S873000

Reexamination Certificate

active

06956141

ABSTRACT:
A process for preparing at least one unsaturated alcohol (B) comprises the steps (I) to (III) below:(I) reaction of at least one alkali metal hydroxide or alkaline earth metal hydroxide with at least one alcohol (A) in at least one organic solvent (L) to give a mixture (G-I) comprising at least the alcohol (A), the solvent (L) and an alkoxide (AL);(II) reaction of at least one carbonyl compound of the formula R—CO—R′ with at least one alkyne of the formula R″—C≡C—H and the mixture (G-I) obtained in step (I) to give a mixture (G-II) comprising at least the alcohol (A), the solvent (L) and an unsaturated alcohol (B);(III) distillation of the mixture (G-II) obtained in step (II) to give the alcohol or alcohols (B) and a mixture (G-III) comprising the solvent (L) and the alcohol (A),wherein the solvent (L) obtained in step (III) and the alcohol (A) obtained in step (III) are recycled as a mixture to step (I).

REFERENCES:
patent: 2488082 (1949-11-01), Gottfried et al.
patent: 5444170 (1995-08-01), Vedage
patent: 2 008 675 (1971-09-01), None
patent: 195 00 479 (1995-07-01), None
patent: 950 894 (1949-10-01), None
patent: 1329815 (1973-09-01), None
Hauxud Shijie (1997) pp. 269-272.

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