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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

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

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2005年03月25日

【期刊论文】Novel Reductive Coupling Cyclization of 1, 1-Dicyanoalkenes Promoted by Metallic Samarium in Aqueous Media

王磊， Lei Wang and Yongmin Zhang*

Tetrahedron Letters 39(1998)5257-5260，-0001，（）：

-1年11月30日

摘要

The reductive coupling cyclization of 1, 1-dicyanoalkenes was performed with metallic samarium in saturated aqueous NH4C1-THF solution at room temperature. Sub-stoichiometric quantities of samarium could be employed and trans-isomer was the major product.

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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.

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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

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2005年03月25日

【期刊论文】A novel preparation of methyl ketones through one-carbon homologation of aldehydes

王磊， Lei Wang， a， b， * Pinhua Li， a Jincan Yana and Zhongzhi Wuc

Tetrahedron Letters Pergamon 44(2003)4685-4688，-0001，（）：

-1年11月30日

摘要

A novel two-step aldehyde homologation procedure for the preparation of methyl ketones has been developed, which involves the use of 1,1-dibromo-1-alkenes as precursors and zinc metal as mediator in near-critical water.

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