tert-Butyl isocyanate → 1-[2-Amino-6-(2,3,5,6-tetramethylphenyl)pyrido[2,3-d]pyrimidin-7-yl]-3-tert-butylurea

Participants

Reaction Steps

The title compound was prepared from 0.3 g of 6-(2,3,5,6-tetramethyl-phenyl)-pyrido[2,3-d]pyrimidine-2,7-diamine from Example 98 and 0.125 mL of tert-butyl isocyanate according to Example 2. The product was purified by medium pressure liquid chromatography eluting with 1:1CHCl3 :EtOAc; mp >300° C.; CIMS (1% ammonia in methane): m/z (relative intensity) 393 (MH+, 55), 394 (MH+ +1, 13), 84 (100).

Provenance & Evidence