Synergistic Pd(0)/Rh(II) Dual Catalytic [6 + 3] Dipolar Cycloaddition for the Synthesis of Monocyclic Nine-Membered <i>N,O</i>-Heterocycles and Their Alder-ene Rearrangement to Fused Bicyclic Compounds
作者:Kyu Ree Lee、Subin Ahn、Sang-gi Lee
DOI:10.1021/acs.orglett.1c01135
日期:2021.5.7
challenge in organic synthesis. Herein we report the synergistic palladium(0)/rhodium(II) dual catalytic cycloaddition of vinylpropylene carbonates with N-sulfonyl-1,2,3-triazoles to afford monocyclic nine-membered N,O-heterocycles. The catalytically generated 1,6-dipole-equivalent zwitterionic π-allyl palladium(II) complex and the 1,3-dipole-equivalent α-imino rhodium(II) carbenoid intermediate react
Copper(i) complexes as catalysts for the synthesis of N-sulfonyl-1,2,3-triazoles from N-sulfonylazides and alkynes
作者:Israel Cano、M. Carmen Nicasio、Pedro J. Pérez
DOI:10.1039/b912835b
日期:——
The well-defined complex [Tpm*,BrCu(NCMe)]BF4 efficiently catalyses the [3+2] cycloaddition between alkynes and N-sulfonylazides under mild conditions, with conversions comparable to others obtained with in situ generated catalytic systems previously described for this transformation.
Brönsted acid catalyzed addition of N 1 - p -methyl toluenesulfonyl triazole to olefins for the preparation of N 2 -alkyl 1,2,3-triazoles with high N 2 -selectivity
作者:Jinwei Shi、Lili Zhu、Jian Wen、Zili Chen
DOI:10.1016/s1872-2067(15)61107-x
日期:2016.8
An efficient newmethod has been developed to synthesize N 2 -alkyl 1,2,3-triazole products by toluenesulfonic acid (TsOH) catalyzed addition of N 1 -Ts substituted 1,2,3-triazoles to olefins. The reactions of monosubstituted and unsubstituted triazole substrates with various olefins, including vinyl esters, are explored.
已开发出一种有效的新方法,通过甲苯磺酸 (TsOH) 催化 N 1 -Ts 取代的 1,2,3-三唑与烯烃的加成来合成 N 2 -烷基 1,2,3-三唑产物。探索了单取代和未取代的三唑底物与各种烯烃(包括乙烯基酯)的反应。