中国科技论文在线

上传时间

2005年03月25日

【期刊论文】A Novel Reduction of Sodium Alkyl Thiosulfates with InCl3(cat.)/Sm(0) System in Aqueous Media: Facile Synthesis of Disulfides

王磊， Pinhua Li， Lei Wang，， Yaner Yang， Xinhua Sun， Min Wang， and Jincan Yan

Heteroatom Chemistry Volume 15, Number 5, 2004，-0001，（）：

-1年11月30日

摘要

A novel reduction of sodium alkyl thiosulfates with InCl3(cat.)/Sm(0) system in aqueous media has been developed, which generates the corresponding disulfides in good yields.

43浏览
0点赞
0收藏
0分享
140下载
0

引用

上传时间

2005年03月25日

【期刊论文】The Sonogashira coupling reaction catalyzed by ultrafine nickel(0) powder

王磊， Lei Wang， *a b Pinhu a Lia and Yicheng Zhang a

Chem. Commun., 2004, 514-515，-0001，（）：

-1年11月30日

摘要

The Sonogashira coupling reaction catalyzed by ultrafine nickel(0) powder has been developed; terminal alkynes couple with aryl, alkenyl iodide and aryl bromide in the presence of cuprous iodide, triphenylphosphine, potassium hydroxide and ultrafine particle nickel(0) to provide the corresponding crosscoupling products with high yields.

40浏览
0点赞
0收藏
0分享
74下载
0

引用

上传时间

2005年03月25日

【期刊论文】Reduction of Nitroarenes to Aromatic Amines with Nanosized Activated Metallic Iron Powder in Water

王磊， Lei Warng， *a， b Pinhua Li， a Zongtao Wu， a Jincan Yan， a Min Wang， a Yanbin Ding a

Synthesis 2003, No.13, 2001-2004，-0001，（）：

-1年11月30日

摘要

A practical reduction of nitroarenes with nanosized activated metallic iron powder in water at 210℃ (near-critical water) has been developed. The reduction generates the corresponding aromatic amines in excellent yields.

nanosize,， iron,， nitroarenes,， aromatic amines,， reduction

121浏览
0点赞
0收藏
0分享
1481下载
0

引用

上传时间

2005年03月25日

【期刊论文】Metallic Samarium Promoted Reductive Dimerization Cyclization of gem-Diactivated Alkenes, Reductive Debromination of vic-Dibromides, and Reduction of Sodium Aikyl Thiosuifates in Aqueous Media

王磊， Lei Wang and Yongmin Zhang*

Tetrahedron 55(1999)10695-10712，-0001，（）：

-1年11月30日

摘要

In saturated NH4CI (aq.)-THF solution at room temperature, metallic samaritan promoted reductive dimerization cyclization of gem-diactivated alkenes, reductive debromination of vic-dibromides, and reduction of sodium alkyl thiosulfates occur to afford corresponding functionalized cyciopentenes, (E)-alkenes, and disulfides. respectively in good yield. Only sub-stoichiometric quantities of samarium are employed in the former reactions and the trans-or trans, trans-form isomer is the majority product of the polysubstituted cyclopentene products.

61浏览
0点赞
0收藏
0分享
120下载
0

引用

上传时间

2005年03月25日

【期刊论文】Rapid microwave-enhanced, solventless Sonogashira coupling reaction on alumina

王磊， George W. Kabalka， * Lei Wang， Vasudevan Namboodiri and Richard M. Pagni

Tetrahedron Letters 41(2000)5151-5154，-0001，（）：

-1年11月30日

摘要

A microwave-enhanced, solventless Sonogashira coupling reaction has been developed. Terminal alkynes couple with aryl or alkenyl iodide on palladium-doped alumina in the presence of triphenylphosphine and cuprous iodide to provide high yields of products.

coupling reactions， palladium， microwave heating， alkynes

54浏览
0点赞
0收藏
0分享
358下载
0

引用