Method for catalytically synthesizing dicycloethyl phosphite ester by using ionic liquid
A bicyclic phosphite and ionic liquid technology, applied in chemical instruments and methods, physical/chemical process catalysts, compounds of Group 5/15 elements of the periodic table, etc., can solve problems such as long reaction time and low yield, achieve short reaction times
Inactive Publication Date: 2010-08-04
NORTHEAST FORESTRY UNIVERSITY
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[0003] The purpose of the present invention is to solve the problem of long reaction time and low yield of using triethylamine as a ca...
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Abstract
The invention discloses a method for catalytically synthesizing dicycloethyl phosphite ester by using ionic liquid, which relates to a method for synthesizing dicycloethyl phosphite ester and solves the problems of long reaction time and low yield during preparing the dicycloethyl phosphite ester by adopting triethylamine as a catalyst. The method comprises the following steps: mixing trimethylolpropane, triethyl phosphite and ionic liquid [Bmim] BF4, then thermostatically reacting the mixture for 1.5 to 5.5 hours under the protection of N2 at the temperature of between 78.4 and 100 DEG C, and distilling the reaction product for 0.5 to 1 hour under reduced pressure to obtain the dicycloethyl phosphite ester. The method for preparing the dicycloethyl phosphite ester has short reaction time, the yield can reach 98 percent, and the purity is 99.27 percent.
Description
technical field [0001] The invention relates to a method for synthesizing ethyl bicyclic phosphite. Background technique [0002] Ethyl bicyclic phosphite is a very important organic intermediate used in the preparation of plastic stabilizers, pesticides, flame retardants, etc. The traditional synthesis method uses triethyl phosphite and trimethylolpropane to reflux and then distill to prepare ethyl bicyclic phosphite. The catalyst is triethylamine. The reaction time of this method is long, it needs 8h, and it consumes heat energy at the same time, and the yield is only 90%. Contents of the invention [0003] The purpose of the present invention is to solve the problem of long reaction time and low yield of using triethylamine as a catalyst to prepare ethyl bicyclic phosphite, and to provide a method for catalyzing the synthesis of ethyl bicyclic phosphite by ionic liquid. The method of ionic liquid catalytic synthesis ethyl bicyclic phosphite of the present invention i...
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Inventor 孙才英董春梅李暐胡树林展召顺
Owner NORTHEAST FORESTRY UNIVERSITY
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