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Pyran Derivatives (pyran + derivative)

Distribution by Scientific Domains
Chemistry100%

Selected Abstracts

ChemInform Abstract: Enantioselective Michael Addition of Malononitrile to Chalcones Catalyzed by a Simple Quinine,Al(OiPr)3 Complex: A Simple Method for the Synthesis of a Chiral 4H-Pyran Derivative.

CHEMINFORM, Issue 51 2009
Jian Shi
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Enantioselective Synthesis of Multifunctionalized 4H-Pyran Derivatives Using Bifunctional Thiourea-tertiary Amine Catalysts.

CHEMINFORM, Issue 42 2009
Sheng-Li Zhao
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Preparation of Pyran Derivatives Promoted by FeCl3×6H2O In Ionic Liquid.

CHEMINFORM, Issue 48 2008
Xinying Zhang
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: [4 + 2] Cycloaddition Reactions of Coumarin Quinone Methide with Pentafulvenes: Facile Synthesis of Novel Polycyclic Pyran Derivatives.

CHEMINFORM, Issue 42 2001
Vijay Nair
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: N,N-Dimethylamino-Functionalized Basic Ionic Liquid Catalyzed One-Pot Multicomponent Reaction for the Synthesis of 4H-Benzo[b]pyran Derivatives under Solvent-Free Condition.

CHEMINFORM, Issue 31 2009
Lu Chen
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: A Task Specific Basic Ionic Liquid, [bmIm]OH-Promoted Efficient, Green and One-Pot Synthesis of Tetrahydrobenzo[b]pyran Derivatives.

CHEMINFORM, Issue 46 2008
Brindaban C. Ranu
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

Electrogenerated Base Promoted Synthesis of Tetrahydrobenzo[b]pyran Derivatives.

CHEMINFORM, Issue 46 2007
Lida Fotouhi
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]

A Mild and Efficient Synthesis of 5-Oxo-5,6,7,8-tetrahydro-4H -benzo-[b]-pyran Derivatives in Room Temperature Ionic Liquids

CHINESE JOURNAL OF CHEMISTRY, Issue 8 2005
Jiang Zhao-Qin
Abstract A one-pot synthesis of a series of 5-oxo-5,6,7,8-tetrahydro-4H -benzo-[b]-pyran derivatives via three-component coupling reactions of aldehydes, dimedone and malononitrile in room temperature ionic liquids (RTILs) without any catalyst has been reported. In the meantime, the reuse of ionic liquids and the effect of different ionic liquids as solvent on the reaction have also been investigated. [source]

Michael-Addition Reaction of Malononitrile with ,,,-Unsaturated Cycloketones Catalyzed by KF/Al2O3

CHINESE JOURNAL OF CHEMISTRY, Issue 2 2004
Xiang-Shan Wang
Abstract A series of KF/Al2O3 catalyzed Michael-addition reactions between malononitrile and ,,,-unsaturate cycloketones in DMF solution were studied. At room temperature, 2-cyano-3-aryl-3,(1, 2, 3, 4-tetrahydronaphthalen-1-one-2-yl) propionitrile derivatives were synthesized by the reaction between 2-arylmethylidene-1, 2, 3, 4-tetra-hydronaphthalen-l-one and malononitrile. However, if the temperature was increased to 80 C, 2-amino-3-cyano-4-aryl-4H -benzo[h]chromene derivatives were obtained in high yields. When the ,,,-unsaturated ketones were replaced by 2, 6-biarylmethylidenecyclohexanone or 25-biarylmethylidenecyclopentanone, another series of 2-amino-3-cyano-4H -pyran derivatives was isolated successfully. The structures of the products were confirmed by X-ray diffraction analysis. [source]