DI-(4-TOLUOYL)-L-TARTARIC ANHYDRIDE synthesis
- Product Name:DI-(4-TOLUOYL)-L-TARTARIC ANHYDRIDE
- CAS Number:72842-25-2
- Molecular formula:C20H16O7
- Molecular Weight:368.34
Yield:72842-25-2 495.4g
Reaction Conditions:
with copper(II) sulfate in toluene; for 6 h;Large scale;
Steps:
1 A d-p-methyldibenzoyl tartaric acid synthesis method, it comprises the following steps:
Taking d-tartaric acid 150g, toluene 200 ml of the 1000 ml three-neck bottle, added under stirring 1.5g copper sulfate, methylbenzoyl chloride to begin dropping 330g, 3 hours drop end, to continue reaction 6 hours, discharging to centrifuge, shall then d-p-methyldibenzoyl tartaric anhydride 495.4g, will in 2000 ml three-neck bottle, adding water and toluene all 495.4g, heated up to reflow, holding 5 hours, cooling to normal temperature discharge, shall then d-p-methyldibenzoyl tartaric acid 374.4 g. The embodiment of thed d-p-methyldibenzoyl tartaric acid for TEM test, test structure as shown in Figure 1, can be known from the graph, the finished d-p-methyldibenzoyl tartaric acid content is purity 99.61%, total yield of 96.6%.
References:
CN104447338,2016,B Location in patent:Paragraph 0034-0036
32634-68-7
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