Asymmetric synthesis of chiral β-alkynyl carbonyl and sulfonyl derivatives via sequential palladium and copper catalysis
作者:Barry M. Trost、James T. Masters、Benjamin R. Taft、Jean-Philip Lumb
DOI:10.1039/c6sc01724j
日期:——
A sequential catalysis strategy for the synthesis of chiral [small beta]-alkynyl carbonyl and sulfonyl derivatives.
用于合成手性[小β]-炔基羰基和磺酰基衍生物的顺序催化策略。
Aerobic copper-catalyzed synthesis of (E)-alkenyl sulfones and (E)-β-halo-alkenyl sulfones via addition of sodium sulfinates to alkynes
作者:Nobukazu Taniguchi
DOI:10.1016/j.tet.2014.01.071
日期:2014.3
(E)-alkenyl sulfones. When a CuCl catalyst was employed, the hydrosulfonylation proceeded syn-selectively, and (E)-alkenyl sulfones were synthesized in excellent yields. In contrast, the reaction using CuI catalyst produced (E)-β-haloalkenyl sulfones anti-selectively in the presence of potassium halides. Furthermore, the (E)-β-bromoalkenyl sulfones are possible to convert into various alkenyl sulfones by Suzuki–Miyaura
A novel stereoselective synthesis of conjugated dienones
作者:Dawei Ma、Yingrui Lin、Xiyan Lu、Yihua Yu
DOI:10.1016/0040-4039(88)85331-0
日期:1988.1
(E,E)-α,β,-γ,δ-Dienones are synthesized stereoselectively from the corresponding α,β-ynones in high yield under the catalysis of a ruthenium hydride complex.
Alkynes were successfully converted into α,β-acetylenic carbonyl compounds through radical-catalyzed aerobic oxidation using N-hydroxyphthalimide (NHPI) combined with a transion metal under mild conditions.
Fine-tuning dirhodium compounds with bridging ligands: Synthesis, structure, catalytic efficiency
作者:Yangbo Ning、Jiantao Tan、Zhifan Wang、Yuanhua Wang
DOI:10.1016/j.jorganchem.2021.122078
日期:2021.12
out a study on the effect of fine-tuning of the bridging ligand on the dirhodium compound. Several dirhodium compounds were designed and synthesized. During this process, we have successfully found Rh2(5-Br-esp)2 and Rh2(5-tBu-esp)2, which are closer to the ideal geometric configuration of the dirhodium(II) compounds. Rh2(5-Br-esp)2 has been applied in the oxidation of propargyl position and Rh2(5-tBu-esp)2