Table 3.

One-pot synthesis of 2-unsubstituted 3H-imidazole-4-carboxylates 2p–w using benzyamine or allylamine.

Entry	DD		Imidazole	2	Yield[a] (%)
	1
1	1c[b]			2p	69
2	1c[b]			2q	78
3	1d			2r	87
4	1d			2s	81
5	1e			2t	59
6	1e			2u	68
7	1f			2v	57
8	1f			2w	62

^[a]Isolated yield (after silica gel chromatography) based on starting material, viz. DD 1d–f or the corresponding chlorohydrazone in the case of 1c.

^[b]DD 1c was prepared in situ from the parent chlorohydrazone and used without further purification.