Table 1.

Pt(II)-Catalyzed 1,2-Dihydropyridine Synthesis^a

entry	substrate	product	yield(%)b
1
	a) R = Me		76
	b) R = p-CIPh		72
	c) R = tBu		76
	d) R = Ph		76
2			56
3
	a) R = cyclopropyl		62
	b) R = Ph		69
	c) R = H		70
4			76

^aStandard conditions: 10 mol % of PtCl₂, 0.2 M in PhMe at 100 °C over 3 h.

^bIsolated yields after column chromatography are reported.