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Updated: Jun 14, 2025

Preparation of N-2-alkoxyvinylsulfonamides from N-tosyl-1,2,3-triazoles and Subsequent Conversion to Substituted Phthalans and Phenethylamines
Published on: January 3, 2018
Highly Efficient One-Pot Synthesis of 2,4,5-Trisubstituted 3(2H)-Furanones Utilizing a Au(I)-Catalyzed
Yanbin Wu1, Shuang Zang1, Hang Ren1
1Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, 688 Yingbin Road, Jinhua, Zhejiang 321004, People's Republic of China.
Abstract:
A highly efficient Au(I)-catalyzed cascade reaction between bispropargylic alcohols and pyridine-N-oxides has been realized. The reaction process involved a gold(I)-catalyzed sequential oxidation/Pinacol rearrangement/oxacyclization. Moreover, 1,2-aryl, 1,2-alkyl, or 1,2-vinyl migration was favored over 1,2-alkynyl in the crucial gold(I)-catalyzed Pinacol rearrangement step. A range of 2,4,5-trisubstituted 3(2H)-furanones were synthesized in high yields (up to 88%) with excellent regioselectivities (up to >19:1) under mild reaction conditions.
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