(S)-(-)-1-Phenylethyl isocyanate → HCID 10321280, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of [1-(2,4-dichloro-pyrimidin-5-yl)-ethyl]-(4-methoxy-phenyl)-amine (378 mg, 1.27 mmol) (from Example 1d supra) and (S)-(−)-α-methylbenzyl isocyanate (205 mg, 1.39 mmol) (Aldrich) in toluene (5 mL) was stirred at 100° C. for 16 hours. After cooling to room temperature the reaction mixture was purified by passing through silica gel and eluting with hexanes-ethyl acetate (1:1) to give 1-[1-(2,4-dichloro-pyrimidin-5-yl)-ethyl]-1-(4-methoxy-phenyl)-3-[1-(S)-phenyl-ethyl]-urea as two separable diastereomers. Less polar diastereomer (thin layer chromatography in hexanes-ethyl acetate, 1:1) (Yield 270 mg, 47.8%) and more polar diastereomer (Yield 284 mg, 50.3%).

Provenance & Evidence