Ureas are an important class of bioactive organic compounds in organic chemistry and exist widely in natural products, agricultural pesticides, uron herbicides, pharmaceuticals. Even though urea itself has been synthesized from CO₂ and ammonia for a long time, the selective and efficient synthesis of substituted ureas is still challenging due to the difficulty of dehydration processes. Efficient and economic fixation of CO₂ is of great importance in solving the problems of resource shortages, environmental issues, global warming, etc. During recent decades, chemists have developed different catalytic systems to synthesize ureas from CO₂ and amines. Herein, we focus on catalytic synthesis of ureas using CO₂ and amines.

尿素是有机化学中一类重要的生物活性有机化合物，广泛存在于天然产物，农业杀虫剂，乌隆除草剂，药物中。尽管尿素本身已经由CO ₂和氨长时间合成，但是由于脱水过程的困难，选择性和有效地合成取代的尿素仍然具有挑战性。在解决资源短缺，环境问题，全球变暖等问题方面，高效，经济地固定CO ₂至关重要。近几十年来，化学家们开发了各种催化系统，以从CO ₂和胺中合成尿素。在本文中，我们专注于使用CO ₂和胺催化合成尿素。