ethyl 5-amino-1-(2-fluorobenzyl)-1H-indole-2-carboxylate 、
(2-methyl-[1,3]dioxolan-2-yl)-acetic acid 在
N,N-二异丙基乙胺 、 Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 3.0h,
以44%的产率得到ethyl 1-(2-fluorobenzyl)-5-{[(2-methyl-1,3-dioxolan-2-yl)-acetyl]-amino}-1H-indole-2-carboxylate