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Enamino Ketones (enamino + ketone)
Selected AbstractsA General and Efficient Method for the Preparation of ,-Enamino Ketones and Esters Catalyzed by Indium TribromideADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 1-2 2006Zhan-Hui Zhang Abstract A variety of ,-enamino ketones and esters have been synthesized in high to exellent yields by reacting ,-dicarbonyl compounds with amines in the presence of a catalytic amount of indium tribromide. The reaction proceeds smoothly at room temperature in a short reaction time under solvent-free conditions. [source] ChemInform Abstract: Approach to Synthesis of ,-Enamino Ketones and Pyrroles Catalyzed by Gallium(III) Triflate under Solvent-Free Conditions.CHEMINFORM, Issue 15 2010Jiuxi Chen 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] Transformation of Amino Acids into Nonracemic 1-(Heteroaryl)ethanamines by the Enamino Ketone MethodologyHELVETICA CHIMICA ACTA, Issue 1 2006Samo Pirc Abstract N -Protected L -phenylalanines 1a,b were transformed, via the corresponding Weinreb amides 2 and ethynyl ketones 3, into chiral enamino ketones 4 (Scheme,1). Similarly, L -threonine 6 was transformed in four steps into the enamino ketone 10. Cyclocondensations of 4 and 10 with pyrazolamines 11, benzenecarboximidamide (12), and hydrazine derivatives 18 afforded N -protected 1-heteroaryl-2-phenylethanamines 15a,e, 16, 17, and 21a,k and 1-heteroaryl-1-aminopropan-2-ols 23a,b in good yields (Schemes,2 and 3). Finally, deprotection by catalytic hydrogenation furnished free amines 22a,g and 24a,b (Scheme,3). [source] A General and Efficient Method for the Preparation of ,-Enamino Ketones and Esters Catalyzed by Indium TribromideADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 1-2 2006Zhan-Hui Zhang Abstract A variety of ,-enamino ketones and esters have been synthesized in high to exellent yields by reacting ,-dicarbonyl compounds with amines in the presence of a catalytic amount of indium tribromide. The reaction proceeds smoothly at room temperature in a short reaction time under solvent-free conditions. [source] Ni(OAc)2: a highly efficient catalyst for the synthesis of enaminone and enamino ester derivatives under solvent-free conditionsAPPLIED ORGANOMETALLIC CHEMISTRY, Issue 10 2010Ju-Yan Liu Abstract Ni(OAc)2 was found to be an efficient catalyst for the synthesis of ,-enamino ketones or esters from ,-dicarbonyl compounds and amines under solvent-free conditions. The reusability of the catalyst was successfully examined without noticeable loss of its catalytic activity. Copyright © 2010 John Wiley & Sons, Ltd. [source] L -Proline Catalyzed Enamination of , -Dicarbonyl Compounds under Solvent-free ConditionsCHINESE JOURNAL OF CHEMISTRY, Issue 9 2008Dhiman KUNDU Abstract A simple, general and efficient method has been developed for synthesis of various , -enamino ketones and esters by reacting , -dicarbonyl compounds with amines using a catalytic amount of L -proline at room temperature under solvent-free conditions in excellent yields. [source] | |||||||||||||||||||