A highly enantio‐ and regioselective hydrosulfonylation of 1,3‐dienes with sulfonyl hydrazides has been realized by using a palladium catalyst containing a monodentate chiral spiro phosphoramidite ligand. The reaction provided an efficient approach to synthetically useful chiral allylic sulfones. Mechanistic studies suggest that the reaction proceeds through the formation of an allyl hydrazine intermediate
Catalytic hydroarylation reactions of conjugated dienes are achieved using tris(pentafluorophenyl)borane as a Lewis acid catalyst under mild reaction conditions. This new protocol shows a broad substrate scope for the highly regioselective functionalization of sterically hindered aniline derivatives. Experimental and extensive density functional theory mechanisticstudies show that the complex of residual
共轭二烯的催化加氢芳基化反应是在温和的反应条件下使用三(五氟苯基)硼烷作为路易斯酸催化剂实现的。这个新协议显示了空间位阻苯胺衍生物的高度区域选择性功能化的广泛底物范围。实验和广泛的密度泛函理论机理研究表明,残留水和 B(C 6 F 5 ) 3的络合物在共轭二烯的芳基辅助质子化中起着至关重要的作用,形成烯丙基阳离子中间体,诱导芳烃的亲电芳香取代。苯胺底物。
Klages, Chemische Berichte, 1902, vol. 35, p. 2649
作者:Klages
DOI:——
日期:——
Kohler, American Chemical Journal, 1907, vol. 38, p. 559
作者:Kohler
DOI:——
日期:——
Zakharkin,L.I.; Savina,L.A., Journal of general chemistry of the USSR, 1967, vol. 37, p. 2441 - 2447