以咔唑为原料,经烷基化、甲酰化反应合成N-烃基咔唑-3-甲醛;无催化剂条件下,N-烃基咔唑-3-甲醛与邻苯二胺经缩合-环化“一锅”反应合成了两类新型含咔唑单元的苯并咪唑衍生物.研究了溶剂选择、溶剂用量、反应温度、反应物配比等因素对缩合-环化反应结果的影响;通过改变两种反应物的等物质的量比可选择性地得到以其中一类苯并咪唑衍生物为主的产物. N-hydrocarbyl-carbazole-3-carbaldehyde was synthesized by alkylation and formylation reaction using carbazole as raw material. In the absence of catalyst, N-hydrocarbazole-3-carboxaldehyde and o-phenylenediamine were condensed-cyclized Two new classes of benzimidazole derivatives with carbazole units were synthesized by one-pot reaction.The effects of solvent selection, solvent amount, reaction temperature and the ratio of reactants on the condensation-cyclization reaction were studied. By changing the molar ratio of the two reactants and other substances, one of the benzimidazole derivative-based products can be selectively obtained.