Table 3.

One-Pot Phosphine-Catalyzed Syntheses of 3-Substituted Quinolines^a

entry	substrate	product	time (min)	yield (%)b
1			240	88
2			30	95
3			20	99
4			5	98
5			5	98
6			5	97
7			5	96
8			5	98
9			90	93
10			40	86
11c			5	63
12			600	61
13			5	30

^a2 (1.5 equiv.) was added in one portion to a solution of 1a (0.2 M) and PPh₃ (10 mol%) in MeCN.

^bIsolated yield.

^cDiacetylene 2q (0.10 mmol) was added to a solution of 1a (0.21 mmol, 0.21 M) and PPh₃ (20 mol%) in MeCN.