Preparation method of nonanal and methyl formylcaprylate
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of methyl nonalate and epoxy methyl oleate, which is applied in the field of preparation of nonanal and methyl nonalate, can solve the problem of low yield of nonanal, achieve high product yield and mild reaction conditions , low cost effect
Inactive Publication Date: 2011-07-20
ZHEJIANG UNIV OF TECH
View PDF1 Cites 17 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
Find out that directly prepare nonanal and nonanalic acid methyl ester from methyl oleate by previous literature and laboratory result often can cause product over-oxidation and most obtain nonanalic acid and hydrogen azelate methyl ester, and the yield of nonanal is relatively low. Low
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0011] The present invention will be further described below in conjunction with embodiment:
[0012] The preparation method of the nonanal and nonanalic acid methyl ester of the present invention uses epoxy methyl oleate as a raw material, the reaction temperature is 40-100° C., and under normal pressure conditions, the reaction generates nonanalic acid under the action of a catalyst. and methyl nonalate; wherein the catalyst used is a mesoporous molecular sieve treated with hydrogen peroxide at a concentration of 10 to 35% as a carrier, and the amount of tungsten as the main catalyst tungsten element is 0.005 to 0.1 in terms of the mass ratio of the carrier. , adding one of titanium and molybdenum elements as a cocatalyst, the dosage is 0-0.1; the molar ratio of epoxy methyl oleate to hydrogen peroxide is 1:0.5-5, and the mass ratio of epoxy methyl oleate to catalyst is 1: 0.0001 ~ 0.1.
[0013] The specific steps of the method are as follows:
[0014] (1) Preparation of t...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
The invention relates to a preparation method of nonanal and methyl formylcaprylate. The method comprises the following steps: epoxidized methyl oleate is used as a raw material to react under the action of catalyst and generate nonanal and methyl formylcaprylate, wherein the reaction temperature is 40-100 DEG C, the pressure is atmospheric pressure; the mesoporous molecular sieve which is treated with 10-35% hydrogen peroxide is taken as a carrier for the catalyst, the weight ratio of tungsten used as main catalyst to the weight of the carrier is 0.005-0.1, and the weight ratio of one of titanium and molybdenum, used as cocatalyst to the weight of the carrier is 0-0.1. The invention has the following beneficial effects: by adopting the technical scheme that the reaction temperature is 40-100 DEG C, the pressure is atmospheric pressure; the mesoporous molecular sieve is taken as a carrier for the catalyst, tungsten is used as a main catalyst and titanium or molybdenum used as cocatalyst is added or not, the problem can be solved well. The preparation method provided by the invention has mild reaction conditions, low cost and higher product yield and is suitable for industrial production.
Description
technical field [0001] The invention relates to the field of fine chemicals, in particular to a method for preparing nonanal and methyl nonalate. Background technique [0002] Nonanal has another name called geranium aldehyde, and nonanal is an important organic intermediate, which can be oxidized into nonanoic acid, reduced to corresponding alcohol, and obtained nonanonitrile (Wang E.C., Lin G.J.Tetrahedron Letters.1998 , 39, 4047-4050), which can be converted into thiazoles that inhibit superoxidation (Chihiro, M.; Nagamoto, H.; Takemura, I.J.Med.Chem.1995, 38, 353-358), anti-ribonucleic acid Viral tetrazole compounds (Diana, G.D.; Cutcliffe, D.; Volkots, D.L.J.Med.Chem.1993, 36, 3240-3250), can also prepare benzamide compounds (Medwid, J.B. ; Paul, R.; Baker, J.S.J.Med.Chem.1990, 33, 1230-1241), etc., are widely used in the fields of medicine, polymer plasticizers, adhesives, catalysts and the like. In addition, because of its sharp aroma of beeswax and rose, it is a ki...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more