tory burch reva Diethylene glycol diallyl carbonat -

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Diethylene glycol diallyl carbonate synthesis of

4509 . 1.3 Method B in the three- neck round bottom flask 250mI add 0.3tool diethylene glycol chloroformate and 0.6mol allyl alcohol,[link widoczny dla zalogowanych], in the dropping funnel to add 0.75tool sodium hydroxide lye ,[link widoczny dla zalogowanych], the temperature Controlled between 0 ~ 10 ~ C the reaction , and the remaining A post-processing and methods of the same. Was colorless and transparent liquid 54.9n1.45O5. 2 Results and discussion 2.1 the usual increase in the proportion of reactant concentration of reactants will be a corresponding increase in the output of products reported in the literature based on foreign reactants diethylene glycol chloroformate And the molar ratio of allyl alcohol i; 2.3 ~ 2.4 between. . . Through experiments we found that within a certain range to reduce the amount of allyl alcohol had no effect on the yield of the products shown in Table 1. At the same time ,[link widoczny dla zalogowanych], Table 1 shows : When diethylene glycol chloroformate with allyl alcohol molar ratio dropped from 1:1.8 to 1:1.7 . Product yields a decrease of 94. Therefore,[link widoczny dla zalogowanych], control of the reactant molar ratio 1:1.8 to 2.0 in the more appropriate . Table 1 The ratio of reactants on yield response to scene pieces are the same : reaction time 6.0h · cartridge should be waist 0 ~ l9c2.2 operating temperature reaction we examined the A, B two different methods of operation,[link widoczny dla zalogowanych], found that the methods used A The average yield of the product of method B than to raise up to I4%, Table 2. A fact reduced because the methods used diethylene glycol chloroformate and water contact time , reducing the degree of ester hydrolysis . Table 2 How the product weight on the yield of the average response time for the three Rotary lively as chloride , 253 * in the reaction process will directly affect the yield of hydrolysis increased . So we shortened the reaction time than the original half of reaction time on product yield level. The results showed that the yield 【 group I group than the 4.8 increase in production . Table 3 The results show that reducing the reaction time will help improve production. Table 3 of reaction time on yield. The average weight of three classes of products
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