Diphenylmethane diisocyanate → HCID 87586011, compound

Participants

Reaction Conditions

Reaction Steps

Under argon gas, 2.14 g of the phenylglyoxylic acid (2-hydroxyethoxy)ethyl ester from Example 1 and 2.24 g of 4,4′-diphenylmethane diisocyanate (Desmodur VL, Bayer) in 15 g of toluene are placed as the initial charge in a 50 ml multi-necked flask and refluxed at 110° C. After 19 hours, the solution is cooled and the toluene is concentrated using a rotary evaporator. The residue is dried under a high vacuum for two hours. 4.6 g of a viscous, slightly brownish oil are obtained. The conversion and the composition of the product mixture are verified by 1H-NMR spectrum and IR spectrum (NCO bands).

Provenance & Evidence