ChemicalBook CAS DataBase List 2-METHYL-M-PHENYLENE DIISOCYANATE

2-METHYL-M-PHENYLENE DIISOCYANATE synthesis

5synthesis methods

Product Name:2-METHYL-M-PHENYLENE DIISOCYANATE
CAS Number:91-08-7
Molecular formula:C9H6N2O2
Molecular Weight:174.16

67-56-1 Synthesis

67-56-1
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$7.29/5ml-f

823-40-5 Synthesis

823-40-5
204 suppliers
$10.00/5g

91-08-7
77 suppliers
$36.00/1g

Yield:-

Reaction Conditions:

with dihydrogen peroxide;triethylamine;trichlorophosphate in toluene at 0; for 12 h;Reagent/catalyst;

Steps:

1-13
Add 0.0240g (0.02mmol) of chromium-centered polyoxometalate [NH4]3[CrMo6O18(OH)6]·7H2O(CrMo6), 6mL toluene solvent, into a 25mL clean reaction tube, 0.2484g (2mmol) 2,6-diaminotoluene,0.0641g (2mmol) methanol,0.3067g (2mmol) phosphorus oxychloride,0.2041g (6mmol) hydrogen peroxide,0.1012g (1mmol) triethylamine, finally, put a balloon over the reaction tube and react at 0°C for 12h; After the reaction is over, take a sample to measure GC-MS, and it is known that the conversion rate of the reaction substrate is greater than 88%, the selectivity of the product was 92%, and it was separated and purified to obtain a light yellow liquid, which was confirmed to be the product toluene diisocyanate by nuclear magnetism.

References:

Linyi Sikerui Polyurethane Materials Co., Ltd.;Han Zhicheng;Yu Han;Wu Zhikang;Dan Demin CN111825575, 2020, A Location in patent:Paragraph 0014; 0025-0026; 0027-0028; 0029-0030; 0031-0050

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