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2006年11月03日

【期刊论文】Molybdenum(VI) cis-Dioxo Complexes with Chiral Schiff Base Ligands: Synthesis, Characterization, and Catalytic Applications

周向葛， Xiangge Zhou， Jin Zhao， Ana M. Santos， and Fritz E. Kuhn

Z. Naturforsch. 59b, 1223-1228(2004)，-0001，（）：

-1年11月30日

摘要

Three optically active Molybdenum (VI) dioxo complexes with tetrahydro salen and substituted tetrahydro salen derivatives as ligands were synthesized and examined as catalysts for asymmetric epoxidation. Complexes of the type MoO2(L)(Solv) and WO2(L) (L=tridentate, trans-2-aminocyclohexanol derived chiral Schiff base, Solv=alcohol) were prepared and characterized by elemental analysis, NMR and IR spectroscopy. These complexes are applicable as catalysts for olefin epoxidation reactions with tert-butyl hydroperoxide (TBHP) being the oxidizing agent. In case of cis-β-methylstyrene moderate enantiomeric excesses of up to 26% can be reached when the reaction is carried out at 0℃.

Catalysis， Chirality， Epoxidation， Molybdenum， Salen

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2006年11月03日

【期刊论文】Nitrene transfer reaction catalyzed by substituted metallophthalocyanines

周向葛， Sheng-Yong Yan a， Yi Wanga， Yuan-Jie Shub， Hui-Hua Liu a， Xiang-Ge Zhoua， c， ∗

Journal of Molecular Catalysis A: Chemical 248(2006)148-151，-0001，（）：

-1年11月30日

摘要

Metallophthalocyanines bearing substituents are found to be efficient catalysts for nitrene transfer reactions. Under optimized reaction conditions, aziridination of alkenes and amidation of C H bonds with PhI=NTs by using 3-trifluromethylphenyoxy-substituted phthalocyanine-iron complex led to the highest yields of 90% and 85% for 4-methylstyrene and 4-ethyltoluene, respectively.

Nitrene transfer， Aziridination， Amidation， Catalytic， Metallophthalocyanine

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2006年11月03日

【期刊论文】Reactions of [{m-h2-C(R1) CHR2}(m-CO)Fe2(CO)6] with (m-S2)Fe2(CO)6: synthesis and structures of [m-h2-C(R1) CHR2](m-RS)[Fe2(CO)6]2(m4-S) (R alkyl, phenyl or acyl)

周向葛， Zhong-Xia Wang a， *， Hui Zhao a， Zhong-Yuan Zhou b， Xiang-Ge Zhou b

Journal of Organometallic Chemistry 595(2000)158-165，-0001，（）：

-1年11月30日

摘要

The reaction of [{m-h2-C(R1) CHR2}(m-CO)Fe2(CO)6] with (m-S2)Fe2(CO)6 forms (m3-S)2Fe3(CO)9 (1) and:or anionic intermediates [{m-h2-C(R1) CHR2}(m-S){Fe2(CO)6}2(m4-S)] (2) depending on the substituents R1 and R2. The actions of the anionic complexes 2 with alkyl halides, PhN2BF4 and acid chlorides give [m-h2-C(R1) CHR2](m-RS)[Fe2(CO)6]2(m4-S) (R alkyl, Ph or acyl). The structures of (m-h2-CH CHPh](m-CH2 CHCH2S)[Fe2(CO)6]2(m4-S)

Iron， Alkenyl ligand， Bridging-sulfur ligand， Complexes， Synthesis， Structures

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周向葛邀请

四川大学，四川

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