5-(4-Chlorophenyl)-1-(2,4-dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxylic acid → 2-[5-(4-chloro-phenyl)-1-(2,4-dichloro-phenyl)-4-methyl-1H-pyrazol-3-yl]-1,3-diaza-spiro[4.4]non-1-en-4-one

Participants

Reaction Steps

Compound 25 was synthesized from 4a (251 mg, 0.66 mmol) and 5j (140 mg, 0.98 mmol) as a white solid (140 mg, 45%) in a manner similar to that described in Example 53. 1H NMR (400 MHz, CDCl3) δ 7.40 (d, 1H), 7.32˜7.26 (m, 3H), 7.12 (s, 1H), 7.02 (d, 2H), 2.49 (m, 2H), 2.36 (s, 3H), 2.17 (m, 2H), 1.86 (m, 4H); ESMS m/z: 473.1 (M+1).

Provenance & Evidence