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王磊, Lei Wang, b, * Pinhua Li a and Li Zhou a
Tetrahedron Letters Pergamon 43(2002)8141-8143,-0001,():
-1年11月30日
A novel metallic samarium promoted reduction of sodium alkyl thiosulfates in the absence of an activating agent occurs to afford the corresponding disulfides with good yields in water at 90℃.
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王磊, Lei Wang and Yongmin Zhang*
Tetrahedron Letters 39(1998)5257-5260,-0001,():
-1年11月30日
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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【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
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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王磊, Lei Wang, *a, b Pinhua Li, a Yuanyuan Xie, a Yanbin Ding a
Synlett 2003, No.8, 1137-1140,-0001,():
-1年11月30日
An unexpected samarium metal mediated chemoselective debromination and reduction of 1,1-dibromo-1-alkenes in methanol has been developed, which generates vinyl monobromides, alkenes, and alkanes respectively with appropriate molar ratio of samarium to 1,1-dibromo-1-alkene.
samarium metal,, 1,, 1-dibromo-1-alkenes,, debromination,, reduction,, methanol
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王磊, WANG, Lei*, a, b, LI, Pin-Hua a
CHINESE JOURNAL OF CHEMISTRY 2003, 21, 710-713,-0001,():
-1年11月30日
A microwave-enhanced, solventless Mannich condensation of terminal alkynes, primary amines with paraformaldehyde on cuprous iodide doped alumina has been investigated. The struc-tures of products depend on the ratio of alkyne to amine and paraformaldehyde.
Mannich condensation,, terminal alkyne,, paraform-aldehyde,, primary amine,, coprous iodide,, alumina,, solvent free,, microwave irradiation
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