3-Oxazolidineethanol, 2-(1-methylethyl)-

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 295 g of a mixture of hexadecylisocyanate and octadecylisocyanate (commercial stearylisocyanate, 14.8% NCO) are slowly added to 159 g (1 mol) of 2-(2-isopropyl-1,3-oxazolidin-3-yl)-ethanol and 0.1 g of Sn(II) octoate at room temperature with stirring. Stirring is continued for 5 hours at about 50° C after all the isocyanate has been added. The product solidifies after some time to a waxy mass which melts to a clear liquid at temperatures of from 65° to 70° C. Stirring melts to a clear liquid at temperatures of from 65° to 70° C.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 133 g (1 mol) of benzylisocyanate is added dropwise to 159 g (1 mol) of 2-(2-isopropyl-1,3-oxazolidin-3-yl)-ethanol with vigorous stirring and the temperature is maintained at from 20° to 25° C with cooling. An almost colorless product with a viscosity of 460 cP (25° C) is obtained. It shows no NCO bands in the IR spectrum, but does show the expected urethane bands (1700 cm-1, 1540 cm-1). the temperature is maintained at from 20° to 25° C with cooling An almost colorless product with a viscosity of 460 cP (25° C) is obtained