Page 1. SYNTHETIC COMMUNICATIONS, 29(4), 645-653 (1999) ... isoquinoline 9 (0.5 g, 1.3 mmol) was hydrogenated in methanol (25 ml) with 10% P d C (0.25 g) at 50 psi for three hours. The reaction mixture was filtered and the Page 9. 1,2,4-TRIAZOLE 653 ...