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.
Studies on the highly regio- and stereoselective selenohydroxylation of 1,2-allenylic sulfoxides with PhSeCl
作者:Guangke He、Chao Zhou、Chunling Fu、Shengming Ma
DOI:10.1016/j.tet.2007.02.049
日期:2007.4
The selenohydroxylation of 1,2-allenyl sulfoxides with PhSeCl in MeCN/H2O (10/1) afforded E-3-hydroxy-2-phenylseleno-1-alkenyl sulfoxides in good yields and high regio-/stereoselectivities.
在MeCN / H 2 O(10/1)中用PhSeCl对1,2-烯基亚砜进行硒羟基化,可得到高收率和高区域/立体选择性的E -3-羟基-2-苯基硒基-1-烯基亚砜。
Cleavage of oxygen–sulfur double bonds and carbon–sulfur bonds: unusual highly selective electrophilic addition of allenylic sulfoxides
作者:Minyan Wang、Chunling Fu、Shengming Ma
DOI:10.1039/c2sc21920d
日期:——
Selective cleavage and formation of covalent bonds is an everlasting topic in the science of synthesis. Recently, much attention has been paid to the activation and functionalization of inert covalent chemical bonds such as C–H, C–O, C–Cl bonds, etc. In this edge article, we report that hydrogen bonding may mediate efficient and highlyselective cleavage of OS and C–S bonds in 1,2-allenyl sulfoxides
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.