- A method for synthesizing trimethyldodecanoline
-
A method for synthesizing 3,7,11-trimethyl-1-dodecyn-3-alcohol, using hexahydro-pseudo-ionone (6,10-dimethyl-2-undecylone) as the starting material, potassium hydroxide or potassium alcohol as a catalyst, organic solvent as a dispersant, acetylene and catalyst to prepare an active acetylene suspension slurry, and then mixed with hexahydro pseudo-ionone through a tubular reactor high temperature rapid reaction to generate the target product. After the reaction end material is water relieved of potassium hydroxide, the target product 3,7,11-trimethyl-1-dodecyn-3-ol is fractionated to collect the target product 3,7,11-trimethyl-dodecyn-3-ol. The present invention has the characteristics of low reaction temperature, short reaction time, high product yield, and low catalyst consumption.
- -
-
Paragraph 0029-0044
(2022/01/12)
-
- Acetylene method (by machine translation)
-
In the presence of a catalyst alkoxide or an amino N,N - salt, the saturated or unsaturated ketone or aldehyde compound is subjected to acetylene hydrogenation to obtain the corresponding alkynol compound, and has the advantages of moderate reaction rate, mild reaction, easy control, easy separation of the product, recyclable solvent and the like. (by machine translation)
- -
-
Paragraph 0054-0056
(2019/11/29)
-
- (6R,10R)-6,10,14-TRIMETYLPENTADECAN-2-ONE PREPARED FROM 6,10-DIMETYLUNDEC-5-EN-2-ONE OR 6,10-DIMETYLUNDECA-5,9-DIEN-2-ONE
-
The present invention relates to a process of manufacturing (6R,10R)-6,10,14-trimetylpentadecan-2-one in a multistep synthesis from 6,10-dimetylundec-5-en-2-one or 6,10-dimetylundeca-5,9-dien-2-one. The process is very advantageous in that it forms in an efficient way the desired chiral product from a mixture of stereoisomers of the starting product.
- -
-
Page/Page column 67
(2014/07/08)
-
- (6R,10R)-6,10,14-TRIMETYLPENTADECAN-2-ONE PREPARED FROM (R)-3,7-DIMETYLOCT-6-ENAL
-
The present invention relates to a process of manufacturing (6R,10R)-6,10,14-trimetylpentadecan-2-one in a multistep synthesis from (R)-3,7-dimethyloct-6-enal. The process is very advantageous in that it forms in an efficient way the desired chiral product from a mixture of stereoisomers of the starting product.
- -
-
Page/Page column 45
(2014/07/08)
-
- (6R,10R)-6,10,14-TRIMETYLPENTADECAN-2-ONE PREPARED FROM 6,10-DIMETYLUNDECA-3,5,9-TRIEN-2-ONE
-
The present invention relates to a process of manufacturing (6R,10R) -6,10,14-trimethylpentadecan-2-one in a multistep synthesis from 6,10- dimethylundeca-3,5,9-trien-2-one. The process is very advantageous in that it forms in an efficient way the desired chiral product from a mixture of stereoisomers of the starting product.
- -
-
Page/Page column 39
(2014/07/08)
-
- (6R,10R)-6,10,14-TRIMETYLPENTADECAN-2-ONE PREPARED FROM 3,7-DIMETYLOCT-2-ENAL OR 3,7-DIMETYLOCTA-2,6-DIENAL
-
The present invention relates to a process of manufacturing (6R,10R)-6,10,14-trimetylpentadecan-2-one in a multistep synthesis from 3,7-dimetyloct-2-enal or 3,7-dimetylocta-2,6-dienal. The process is very advantageous in that it forms the desired chiral product from a mixture of stereoisomers of the starting product in an efficient way.
- -
-
Page/Page column 49; 50
(2014/07/08)
-
- ETHYNYLATION PROCESS
-
A process for the manufacture of an acetylenically unsaturated alcohol comprising reacting formaldehyde, an aldehyde or a ketone (a carbonyl compound) with acetylene in the presence of ammonia and an alkali metal hydroxide, the molar ratio of the alkali metal hydroxide to the carbonyl compound being less than 1 : 200. The reaction products, which depending on the starting carbonyl compound are propargyl alcohol or 1-monosubstituted or 1,1-disubstituted derivatives thereof, are of use as intermediates in the synthesis of many useful end products, inter alia in the field of vitamins and carotenoids.
- -
-
-
- Diols and process for preparation thereof
-
An alkyne-10,15-diol is synthesized by coupling a 3-alkynol containing methyl groups by using as a catalyst a complex comprised of a halide of a metal of Group VII of the Periodic Table coordinated with an organic phosphorus compound. The so-obtained diol can be formed into squalane [2,6,10,15,19,23-hexamethyl tetracosane] by hydrogenolysis, a combination of hydrogenation and hydrogenolysis or a combination of hydrogenation, dehydration and hydrogenation.
- -
-
-