Amine-catalyzed synthesis of N2-sulfonyl 1,2,3-triazole in water and the tunable N2-H 1,2,3-triazole synthesis in DMSO via metal-free enamine annulation
作者:Yanhui Guo、Yunyun Liu、Jie-Ping Wan
DOI:10.1016/j.cclet.2021.08.003
日期:2022.2
N2-H 1,2,3-triazoles via organocatalytic annulation of enaminone/enaminoester with sulfonyl azide has been realized. The unconventional selectivity providing N2-sulfoyl 1,2,3-triazoles takes place in pure water, wherein the hydrogen bond effect between water and the intermediate resulting from enamine-azide corporation accounts for the novel reaction selectivity. On the other hand, the reactions conducted
实现了烯胺酮/烯胺酯与磺酰叠氮的有机催化环化选择性合成N 2 -磺酰基和N 2 -H 1,2,3-三唑。提供N 2 -磺酰基1,2,3-三唑的非常规选择性发生在纯水中,其中水和烯胺-叠氮化物产生的中间体之间的氢键作用解释了新的反应选择性。另一方面,在没有这种氢键效应的情况下,在 DMSO 中进行的反应特异性地提供了N 2 -H 1,2,3-三唑。