The invention relates to a process for fixing an electrophilic group in the 2-position of 1H-pyrrolo[3,2-c]pyridine N-protected in the 1-position, process which consists in protecting the 1-position in question with a labile protecting group, reacting the compound so obtained with a lithiation agent selected from a lithium amide and an alkyl lithium at a temperature between -80.degree. C. and -20.degree. C. and in the presence of tetramethylethylenediamine to obtain the corresponding 2-lithio derivative and then condensing the metal derivative so obtained at a temperature between -80.degree. C. and room-temperature with a reagent capable of giving rise to an electrophilic group to form N-protected 1H-pyrrolo[3,2-c]pyridine substituted in the 2-position by an electrophilic group.
该发明涉及一种将电亲和基固定在1H-
吡咯并[3,2-c]
吡啶N-保护物的2-位置的过程,该过程包括以下步骤:用一种不稳定的保护基保护所需的1-位置,将所得化合物与选择自
锂胺和烷基
锂的
锂化试剂在-80°C至-20°C的温度下,在
四甲基乙二胺的存在下反应,得到相应的2-
锂衍
生物,然后将所得
金属衍
生物在-80°C至室温之间的温度下与能够生成电亲和基的试剂缩合,形成N-保护的1H-
吡咯并[3,2-c]
吡啶,其在2-位置被一个电亲和基取代。