通过二芳基二硒化物与末端炔烃的一锅反应来合成标题化合物,从而避免了之前制备芳基硒基炔烃的情况。反应在温和条件下,使用KF / Al 2 O 3和PEG-400作为溶剂,在一定范围的末端炔烃下进行。立体选择性地将二芳基二硒化物加成至炔烃中,以良好的收率仅得到(Z)-1,2-双-芳基-杂戊基烯基烯烃。使用微波辐射将反应时间缩短至几分钟,并且KF / Al 2 O 3 / PEG-400系统可以重复使用一次,而无需事先进行类似活性的处理。
Highly Stereoselective One-Pot Procedure To Prepare Bis- and Tris-chalcogenide Alkenes via Addition of Disulfides and Diselenides to Terminal Alkynes
作者:Angélica Venturini Moro、Cristina W. Nogueira、Nilda B. V. Barbosa、Paulo Henrique Menezes、João Batista Teixeira da Rocha、Gilson Zeni
DOI:10.1021/jo050448o
日期:2005.6.1
conditions, and the addition of dichalcogenides to alkynes occurred stereoselectively to give exclusively the corresponding Z isomers. We observed that the selectivity control was governed by the effective participation of the hydroxyl group from propargyl alcohols. In addition, the bis-chalcogenide alkenes were exclusively obtained with propargyl alcohol having the acidic hydroxyl group proton. Conversely
A simple and stereoselective synthesis of (Z)-1,2-bis-arylselanyl alkenes from alkynes using KF/Al2O3
作者:Renata G. Lara、Paloma C. Rosa、Liane K. Soares、Márcio S. Silva、Raquel G. Jacob、Gelson Perin
DOI:10.1016/j.tet.2012.08.055
日期:2012.12
The title compounds were synthesized by a one-pot reaction of diaryl diselenides with terminalalkynes avoiding the previous preparation of arylselanyl alkynes. The reactions were performed under mild conditions with a range of terminalalkynes using KF/Al2O3 and PEG-400 as solvent. The addition of diaryl diselenides to alkynes occurred stereoselectively to give exclusively (Z)-1,2-bis-arylselanyl
通过二芳基二硒化物与末端炔烃的一锅反应来合成标题化合物,从而避免了之前制备芳基硒基炔烃的情况。反应在温和条件下,使用KF / Al 2 O 3和PEG-400作为溶剂,在一定范围的末端炔烃下进行。立体选择性地将二芳基二硒化物加成至炔烃中,以良好的收率仅得到(Z)-1,2-双-芳基-杂戊基烯基烯烃。使用微波辐射将反应时间缩短至几分钟,并且KF / Al 2 O 3 / PEG-400系统可以重复使用一次,而无需事先进行类似活性的处理。