Studies on highly regio- and stereoselective hydration of 1,2-allenylic sulfoxides
作者:Zhao Fang、Chao Zhou、Chunling Fu、Shengming Ma
DOI:10.1039/c0ob00007h
日期:——
A highlyregio- and stereoselective hydration of 1,2-allenylicsulfoxides in which proton served as the electrophile was reported. Through the X-ray diffraction study, it was concluded that the reaction may proceed via a 5-membered cyclic intermediate following by attack of the −OH at the sulfur atom.
Highly Regio- and Stereoselective Iodohydroxylation of 1,2-Allenylic Sulfoxides in the Presence of Benzyl Thiol
作者:Minyan Wang、Chunling Fu、Shengming Ma
DOI:10.1002/adsc.201000973
日期:2011.7
The iodohydroxylation of 1,2‐allenyl sulfoxides with iodine in the presence of benzylthiol afforded 3‐hydroxy‐2‐iodo‐2(E)‐alkenyl sulfides in good yields and high regio‐ and stereoselectivities. In this reaction it was observed that the sulfoxide functionality was reduced to sulfide and the water in the reaction mixture plays an important role for the stereoselectivity observed. A mechanism involving
Highly regio- and stereoselective PdCl2(MeCN)2-catalyzed cross coupling of 1,2-allenylic sulfoxides with allyl bromide
作者:Shengming Ma、Qi Wei、Hongjun Ren
DOI:10.1016/j.tetlet.2004.02.144
日期:2004.4
2-Allyl-1(E),3(E)-dienyl sulfoxides were prepared highlystereoselectively via the PdCl2(MeCN)2-catalyzed coupling reaction of 1,2-allenylicsulfoxides and allyl bromide. A rationale was proposed for this transformation.