Reference of 106246-33-7, In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 106246-33-7 as follows.
EXAMPLE 1a Production of 4,4′-methylene-bis-(3-chloro-2,6-diethylphenylisocyanate) 100 g (0.26 mmol) of 4,4′-methylene-bis-(3-chloro-2,6-diethylaniline) was introduced into 1000 g of dichlorobenzene in an autoclave at room temperature. 57 g (0.58 mol) of phosgene was introduced into this solution over a period of 30 minutes. The reaction mixture was stirred in a sealed autoclave at 80 C. for 1 hour. Then, it was depressurized, and the hydrochloric acid that was produced, the excess phosgene, and the solvent were removed. In this case, the title product resulted in a yield of 110 g (98% of theory). Other data concerning the product is: IR (KBr): 2288.1 cm-1 1 H-NMR (CDCl3, 400 MHz) in ppm: 6.69 s, 2H; 4.12 s, 2H; 2.91 q, 4H, J=7.5 Hz; 2.59 q, 4H, J=7.6 Hz; 1.20 t, 6H, J=7.6 Hz; 1.15 t, 6H, J=7.5 Hz.
According to the analysis of related databases, 106246-33-7, the application of this compound in the production field has become more and more popular.
Reference:
Patent; Lonza AG; US5734076; (1998); A;,
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