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Larock indole synthesis using palladium complexes immobilized onto mesoporous silica

Heterogeneous palladium catalysts were prepared by covalent immobilization of palladium (II) complexes of the general formula PdCl2L2 (L=P, CN) onto SBA-15 silica using a post-synthetic method.

出版机构:Elsevier Science

刊物名称:Applied Catalysis A: General

出版时间:2010

ISSN:0926-860X

数据源:报刊文摘

Solvent‐Dependent Enantiodivergent Mannich‐Type Reaction: Utilizing a Conformationally Flexible Guanidine/Bisthiourea Organocatalyst

Flex control: Malonate and tert?butoxycarbonyl (Boc)?protected imines react in the presence of the flexible catalyst 1 to furnish the S or the R adduct depending upon the solvent used.

出版机构:WILEY‐VCH Verlag

刊物名称:Angewandte Chemie International Edition

出版时间:2010

ISSN:1433-7851

数据源:报刊文摘

The epoxidation of olefins catalyzed by a new heterogeneous polyoxometalate-based catalyst with hydrogen peroxide

Inorganic?organic hybrid material was formed by [PW11O39]7? and benzene-1,3,5-[tris(phenyl-4-carboxylic acid)] tris (2-trimethyl-ammonium ethyl) ester.

出版机构:Elsevier Science

刊物名称:Catalysis Communications

出版时间:2010

ISSN:1566-7367

数据源:报刊文摘

Biomimetic NAD+ Models for Tandem Cofactor Regeneration, Horse Liver Alcohol Dehydrogenase Recognition of 1,4‐NADH Derivatives, and Chiral Synthesis

Two tandem catalysis approaches: first, a cofactor regeneration procedure with an NAD+ model and [Cp*Rh(bpy)H]+, which was formed in situ, provided the 1,4?NADH analogue 1.

出版机构:WILEY‐VCH Verlag

刊物名称:Angewandte Chemie International Edition

出版时间:2002

ISSN:1433-7851

数据源:报刊文摘

Controllable Synthesis of VSB‐5 Microspheres and Microrods: Growth Mechanism and Selective Hydrogenation Catalysis

Nanoporous VSB?5 nickel phosphate molecular sieves with relatively well controllable sizes and morphology of microspheres assembled from nanorods were synthesized at 140??C over a short time in the presence of hexamethylenetetramine (HMT) by a facile hydrothermal method.

出版机构:WILEY‐VCH Verlag

刊物名称:Chemistry - A European Journal

出版时间:2008

ISSN:0947-6539

数据源:报刊文摘

Aldolase‐Catalyzed Asymmetric Synthesis of Novel Pyranose Synthons as a New Entry to Heterocycles and Epothilones

Enzymatic reactions catalyzed by DERA provide the basis for a new strategy for the synthesis of novel pyranose synthons. The utility of this very convergent and effective method is demonstrated by the concise total synthesis of epothilones (see scheme; DERA=2?deoxyribose?5?

出版机构:WILEY‐VCH Verlag

刊物名称:Angewandte Chemie International Edition

出版时间:2002

ISSN:1433-7851

数据源:报刊文摘

Stereoselective Total Synthesis of Epothilones by the Metathesis Approach Involving C9−C10 Bond Formation

A stereoselective synthesis of epothilone B was achieved by the metathesis of the diene 1, by use of a new Grubbs catalyst to form the C9?C10 bond, followed by hydrogenation and deprotection of 2; TBS=tert?

出版机构:WILEY‐VCH Verlag

刊物名称:Angewandte Chemie International Edition

出版时间:2002

ISSN:1433-7851

数据源:报刊文摘

Catalytic Asymmetric Inverse‐Electron‐Demand (IED) [4+2] Cycloaddition of Salicylaldimines: Preparation of Optically Active 4‐Aminobenzopyran Derivatives

The catalytic asymmetric inverse?electron?demand (IED) [4+2]?cycloaddition of various salicylaldehyde?derived N?arylimines with electron?rich alkenes in the presence of chiral BINOL?

出版机构:WILEY‐VCH Verlag

刊物名称:Advanced Synthesis & Catalysis

出版时间:2010

ISSN:1615-4150

数据源:报刊文摘

Poly(vinyl alcohol)‐Graft‐Poly(ethylene glycol)‐Supported Hydroxyproline Catalysis of Stereoselective Aldol Reactions

Summary: The good swelling and high loading of poly(vinyl alcohol)?graft?poly(ethylene glycol) (PVA?g?PEG) resins proved to be effective for performing supported proline?

出版机构:WILEY‐VCH Verlag

刊物名称:Macromolecular Symposia

出版时间:2010

ISSN:1022-1360

数据源:报刊文摘

The Leiodolide B Puzzle

Out of options? Even though a systematic approach was chosen, which led to a set of four diastereomeric macrolides modeled around the proposed structure of leiodolide?B (see picture), the puzzle concerning the stereostructure of this cytotoxic metabolite derived from a deep?

出版机构:WILEY‐VCH Verlag

刊物名称:Angewandte Chemie International Edition

出版时间:2011

ISSN:1433-7851

数据源:报刊文摘