title: (n)Bu3P-catalyzed desulfonylative [3 + 2] cycloadditions of allylic carbonates with arylazosulfones to pyrazole derivatives.
abstract: Highly efficient (n)Bu3P-catalyzed desulfonylative [3 + 2] cycloadditions of allylic carbonates with arylazosulfones were developed for the synthesis of pyrazole derivatives. The reactions proceed smoothly under mild conditions to generate corresponding annulation products in good to excellent yields.
authors: Department of Chemistry, Huaibei Normal University , Huaibei, Anhui 235000, P. R. China.
authors: Qi
authors: Q
authors: Zhang
authors: Ling-Guo
authors: LG
authors: Meng
authors: Kuai
authors: K
authors: Wang
authors: Lei
authors: L
authors: Wang