通过芳基硼酸叠氮化钠的新型一锅三组分反应,高收率合成了一系列1-芳基-5-三氟甲基(或二氟甲基)–1,4,5-三取代的1,2,3-三唑,在DMSO / H 2 O(10/1)混合物为溶剂的情况下,在Cu(OAc)2和哌啶的存在下,使用活性亚甲基酮,例如4,4-二氟乙酰乙酸乙酯或4,4,4-三氟乙酰乙酸乙酯。
Organocatalytic Enamide–Azide Cycloaddition Reactions: Regiospecific Synthesis of 1,4,5‐Trisubstituted‐1,2,3‐Triazoles
作者:Lee Jin Tu Danence、Yaojun Gao、Maoguo Li、Yuan Huang、Jian Wang
DOI:10.1002/chem.201002775
日期:2011.3.21
Heterocycles in one click: A novel organocatalytic enamide–azide cycloadditionreaction has been developed. This synthetic procedure represents a new method for the efficient construction of 1,4,5‐trisubstituted‐1,2,3‐triazoles under mild reaction conditions. Most significantly, the investigated process is highly regiospecific (see scheme).