Adamantanyl-substituted PEPPSI-type palladium(II) N-heterocyclic carbene complexes: synthesis and catalytic application for CH activation of substituted thiophenes
作者:Vladimir A. Glushkov、Michail S. Denisov、Aleksey A. Gorbunov、Yurii A. Myalitzin、Maksim V. Dmitriev、Pavel A. Slepukhin
DOI:10.1007/s10593-019-02445-1
日期:2019.3
salts and corresponding unsymmetrically substituted Pd(II) PEPPSI-type complexes were prepared, including dichloride, dibromide, and diiodide. Single crystal X-ray crystallography confirmed solid state structures in six cases. The complexes reported in this work displayed moderate activities as precatalysts for CH activation/arylation reaction of substituted thiophenes.
A trisulfur radical anion (S<sub>3</sub>˙<sup>−</sup>) involved sulfur insertion reaction of 1,3-enynes: sulfide sources control chemoselective synthesis of 2,3,5-trisubstituted thiophenes and 3-thienyl disulfides
作者:Jing-Hao Li、Qi Huang、Weidong Rao、Shun-Yi Wang、Shun-Jun Ji
DOI:10.1039/c9cc03604k
日期:——
situ generated from S2− with 1,3-enynes for the chemoselective synthesis of 2,3,5-trisubstituted thiophenes and 3-thienyl disulfides controlled by sulfide salts are developed. These two protocols provide new, environment-friendly and simple strategies to construct 2,3,5-trisubstituted thiophenes and 3-thienyl disulfides via the formation of two and six C–S bonds, respectively.