A Novel and Chemoselective Process of N-Alkylation of Aromatic Nitrogen Compounds Using Quaternary Ammonium Salts as Starting Material

Table 1

Chemoselective alkylation of nitrogen heterocyclic rings with TEBAC.

	Starting material	Product	Time (h)	Yield (%)
				R = Bn
	1	1a	18	84
	2	2a	6	90
	3	3a	2	98
	4	4a	17	88
	5	5a	4	61
	6	6a	3	86
	7	7a	4	75
	8	8a	8	52
	9	9a	8	50
	10	10a	2	64

Yields refer to chromatographically pure isolated compounds.