Yong-Min Zhang

SmI3 Catalyzed Condensation of Aliphatic Cycloketones and Aldehydes in Ionic Liquid

Abstract SmI3 catalyzed condensation of aliphatic cycloketones and aldehydes was studied in ionic liquid. 2,5-Dibenzyldiene cyclopentanones and 2,6-dibenzyldienecyclohexanones were prepared in high yields under convenient conditions.

Samarium diiodide mediated barbier-type reaction of 2-chloromethylbenzoxazole and 2-chloromethylbenzothiazole with carbonyl compounds: A convenient synthesis of 1-(β-hydroxyalkyl)benzoxazoles and 1-(β-hydroxyalkyl)benzothiazoles

Abstract 1-(β-Hydroxyalkyl)benzoxazoles and 1-(β-hydroxyalkyl)benzothiazoles were prepared via reductive addition reactions of 2-chloromethylbenzoxazole and 2-chloromethylbenzothiazole with carbonyl compounds under mild conditions mediated by SmI2.

Reactions of aroyl chlorides with samarium metal in DMF-controllable syntheses of O-aroylbenzoins, 1,2-diarylethanones, and (Z)-α,α'-stilbenediol dibenzoates

Abstract Reduction of aroyl chlorides carried out in DMF with samarium metal has been studied. Samarium metal, which requires not any intended activation or pretreatment, was found to react with aroyl chloride in a controllable manner. Correspondingly, O‐aroylbenzoins, 1,2‐diarylethanones, or (Z)‐α,α′‐stilbenediol dibenzoates were afforded as the major products under controlled conditions.

Low-Valent Titanium Promoted Self-Coupling of N-Acylbenzotriazoles and Their Cross-Coupling with Diarylketones

Abstract The self-coupling reaction of N-acylbenzotriazoles and their cross-coupling with diarylketones promoted by Sm/TiCl4 system were investigated. Self-coupling reaction could afford α-diketones or benzoins in moderate yields, while the cross-coupling reaction gave 1,2,2-triaryl ethanones in good yields.

Facile Synthesis of Polysubstituted 2,3-Dihydrofuran and Cyclopentenylamine Derivatives Promoted by Samarium Diiodide

Abstract The intermolecular reductive coupling of 1,1-diaryl-2,2-dicyanoethylenes or 1,1-diaryl-2-cyano-2-ethoxycarbonylethylenes with ketones or chalcones induced by samarium (II) iodide was studied. Functionalized 2,3-dihydrofuran and cyclopentenylamine derivatives were prepared in moderate to good yields under neutral and mild conditions.

Samarium(III) Iodide Promoted Three-Component Coupling Reactions of Aldehydes, α-Haloketones, and Active Methylene or Methyl Compounds

Abstract In the presence of samarium(III) iodide, the reaction of aldehydes, α-haloketones with malononitrile, ethylcyanoacetate or nitromethane proceeded very efficiently and furnished moderate to high yields of adducts.

Synthesis of Functionalized 2,3-Dihydropyrroles Promoted by Samarium Diiodide

Abstract The intermolecular reductive coupling of 1,1-diaryl-2,2-dicyanoethylenes or 1,1-diaryl-2-cyano-2-ethoxycarbonylethylenes with substituted benzalazines induced by samarium diiodide was studied. Functionalized 2,3-dihydropyrroles were prepared in good yields under neutral and mild conditions.

FACILE SYNTHESIS OF POLYSUBSTITUTED CYCLOPENTENYLAMINES OR γ-HYDROXYAMIDES BY SAMARIUM DIIODIDE

ABSTRACT Promoted by SmI2, γ-Hydroxyamides or polysubstituted cyclopentenylamines were synthesized from 1,1-diaryl-2,2-dicyanoethylenes or diaryl ketones and cinnamoyl amides under mild conditions in good yields.

NEW PROCEDURE FOR THE PREPARATION OF 2,3-DIHYDRO- 1,5-BENZOTHIAZEPIN-4(5H)-ONES PROMOTED BY SAMARIUM DIIODIDE

ABSTRACT A new series of 2-aryl-3-cyano-2,3-dihydro-1,5-benzothiazepin-4(5H)-ones were synthesized in moderate to high yield via reductive cyclization of nitrodisulfides with arylmethylidenemalonitriles promoted by SmI2 under mild and neutral conditions.

Samarium Mediated Reductive Coupling Cyclization of α-Phenylsulfonylcinnamonitriles Catalyzed by Viologen Under Room Temperature Conditions

Abstract Promoted by metallic samarium and catalyzed by viologen, the intermolecular reductive coupling cyclization reactions of α-phenylsulfonylcinnamonitriles were studied. A possible reaction mechanism was proposed.