Home  About us  Contact
 

Efficient Entry (efficient + entry)

Distribution by Scientific Domains
Chemistry87%

Selected Abstracts

ChemInform Abstract: Rapid and Efficient Entry to Vinyl Silanes from Aldehydes Employing a Novel Metalation,Peterson Sequence.

CHEMINFORM, Issue 28 2008
James McNulty
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]

Practical and Efficient Entry to Isoflavones by Pd(0)/C-Mediated Suzuki,Miyaura Reaction.

CHEMINFORM, Issue 31 2007
Total Synthesis of Geranylated Isoflavones.
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]

Efficient Entry to Polysubstituted Pyrrolizidines, Indolizidines and Quinolizidines via a Sequential Reaction Process.

CHEMINFORM, Issue 38 2006
Dawei Ma
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]

ChemInform Abstract: Oxidative Opening of Cycloalkanols: An Efficient Entry to ,-Iodocarbonyl Compounds.

CHEMINFORM, Issue 4 2002
Jose Barluenga
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]

Sequential 1,3-Dipolar Cycloaddition of Nitrones to ,-(2-Aminophenyl) ,,,-Ynones and Cyclocondensation: A New Entry to the Isoxazolino[4,5- c]quinoline Ring

EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 7 2009
Giorgio Abbiati
Abstract The reaction of ,-(2-aminophenyl) ,,,-ynones with N -methyl nitrones provides a simple and efficient entry to the isoxazolino[4,5- c]quinoline ring system through a sequential 1,3-dipolar cycloaddition/annulation process. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009) [source]

Buyers' Miscoordination, Entry and Downstream Competition,

THE ECONOMIC JOURNAL, Issue 531 2008
Chiara Fumagalli
This article shows that buyers' coordination failures might prevent entry in an industry with an incumbent firm and a more efficient potential entrant. If there were a single buyer, or if all buyers formed a central purchasing agency, coordination failures would be avoided and efficient entry would always occur. More generally, exclusion is less likely the lower the number of buyers. For any given number of buyers, exclusion is less likely the more fiercely buyers compete in the downstream market. First, intense competition may prevent miscoordination equilibria from arising; second, in cases where miscoordination equilibria still exist, it lowers the maximum price that the incumbent can sustain at such exclusionary equilibria. [source]

ChemInform Abstract: Titanium(IV) Isopropoxide Mediated Synthesis of Pyrimidin-4-ones.

CHEMINFORM, Issue 40 2010
Joshi M. Ramanjulu
Abstract The method tolerates a wide array of functionality and allows for rapid and efficient entry into tri- and tetrasubstituted pyrimidin-4-ones in a single step. [source]

Biocatalytic Asymmetric Rearrangement of a Methylene-Interrupted Bis-epoxide: Simultaneous Control of Four Asymmetric Centers Through a Biomimetic Reaction Cascade

CHEMISTRY - A EUROPEAN JOURNAL, Issue 14 2004
Silvia M. Glueck
Abstract Asymmetric enzyme-catalyzed hydrolysis of methylene-interrupted bis-epoxides 1,a and 1,b catalyzed by bacterial epoxide hydrolases furnished tetrahydrofuran derivatives 2,a and 2,b through a hydrolysis,rearrangement cascade. Whereas racemic bis-oxiranes 1,b,d underwent kinetic resolution with moderate stereoselectivities to yield products with up to 92,% ee and 66,% de: meso -bis-oxirane cis,cis- 1,a was transformed into (6R,7R,9S,10S)- 2,a in 94,% ee and 89,% de at high conversion (85,%) by Rhodococcus sp. CBS 717.73 as the major product. The reaction sequence resembles a biomimetic reaction cascade and provides an efficient entry into the structural core of annonaceous acetogenins with simultaneous control of four stereocenters. [source]