[NH:1]1[CH2:7][CH2:6][CH2:5][NH:4][CH2:3][CH2:2]1.Cl[C:9]1[C:14]([NH:15][CH:16]([CH3:18])[CH3:17])=[N:13][CH:12]=[CH:11][N:10]=1>>[CH3:17][CH:16]([NH:15][C:14]1[C:9]([N:1]2[CH:7]=[CH:6][CH:5]=[N:4][CH:3]=[CH:2]2)=[N:10][CH:11]=[CH:12][N:13]=1)[CH3:18]Following the general procedure of PREPARATION 24 and making non-critical variations but starting with homopiperazine (2.46 g) and 2-chloro-3-(1-methylethyl)aminopyrazine (PREPARATION 23), the title compound is obtained, NMR (300 MHz, CDCl3) 7.56, 7.34, 4.75, 4.04, 3.28-3.18, 3.00-2.94, 1.79, and 1.15δ.
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