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。
Convenient stereoselective synthesis of 3-hydroxy-2-iodo-2(E)-alkenyl sulfides via iodohydroxylation of 1,2-allenyl sulfoxides in the presence of BnSH
作者:Chunling Fu、Xian Huang、Shengming Ma
DOI:10.1016/j.tetlet.2004.05.160
日期:2004.7
iodohydroxylation of 1,2-allenyl sulfoxides with I2 in the presence of BnSH affords 3-hydroxy-2-iodo-2(E)-alkenyl sulfides in good yields and selectivities. The stereochemistry for the products of this transformation is opposite to what was obtained from the iodohydroxylation of 1,2-allenyl sulfides. Based on the results of some control experiment, a mechanism was proposed.
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
Unique Selectivity of Iodohydroxylation Reaction of Allenyl Phenyl Sulfoxides in Aqueous MeCN. A Stereodefined Synthesis of (<i>E</i>)-2-Iodo-3-hydroxy-1-alkenyl Sulfoxides
作者:Shengming Ma、Qi Wei、Haiming Wang
DOI:10.1021/ol006639p
日期:2000.11.1
Iodohydroxylation reaction of allenyl phenyl sulfoxides with I-2 can smoothly proceed to generate (E)-2-iodo-3-hydroxy-1-alkenyl sulfoxides with excellent regio- and stereoselectivity in high or excellent yields. The configuration of E-2a was determined by the X-ray diffraction study.