关键词: 非光气, N-取代氨基甲酸酯, 羰基化试剂, 二氧化碳, 合成, 催化

Abstract: This review provides a summary of research progress of non-phosgene synthesis of N-substituted carbamates using various carbonyl reagents，such as CO，dimethyl carbonate，CO2 and alkyl carbamates. The advantages and disadvantages of various synthetic methods are analyzed. Low toxicity，high activity and simple preparation make alkyl carbamates the most industrialized carbonyl reagent for N-substituted carabamates synthesis and the N-substituted carbamates synthesized from CO2 is a research focus on green chemistry，which provides a new route for chemical utilization of CO2.

Key words: non-phosgene, N-substituted carabamates, carbonyl reagents, carbon dioxide, synthesis, catalysis