α,β-Unsaturated carbonyl
SbCl3 HAP catalyzed aza Michael addition of aliphatic amines to α,β unsaturated carbonyl compounds and nitriles
... to α,β-unsaturated carbonyl compounds and nitriles provide the corresponding β-amino derivatives, which have attracted great attention for their use as important synthons for the ...
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Microwave induced novel synthesis and characterization of 3,5-diaryl-∆2-isoxazoline” from α, β-unsaturated carbonyl compounds
... of α,β- unsaturated carbonyl compounds 2 has been recognized as a significant field of ...the α, β-unsaturated carbonyl group, are associated with wide range of ...
6
Cp*Co(III) Catalyzed coupling of benzamides with α,β unsaturated carbonyl compounds: Preparation of aliphatic ketones and azepinones
... This compound was prepared by the general alkylation protocol described above starting from substrate 1j 194 mg, 0.8 mmol to yield an off-white powder 118 mg, 53 %... This compound was p[r] ...
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Cp*Co(III) Catalyzed coupling of benzamides with α,β unsaturated carbonyl compounds: Preparation of aliphatic ketones and azepinones
... ,- unsaturated ketones is the driving force leading to the observed aliphatic ketone product rather than olefinic products reported using ,-unsaturated esters as coupling ...
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ATIMICROBIAL AND CYTOTOXIC EVALUATION OF (E)- THIENYLCHALCONES DERIVED FROM THIOPHENE-2-CARBALDEHYDE
... Background: Chalcones are 1,3 diaryl-2-propene-1-one in which two aromatic rings are linked by a three carbon α, β-unsaturated carbonyl system and have been reported to posses antivira[r] ...
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BIOACTIVE COMPOUND FROM LEAVES PART OF LANTANA CAMARA
... IR spectra of the compound showed absorption bands for hydroxyl group 3398 cm–1, chelated α, β–unsaturated carbonyl attached with aromatic nucleus 1727, 1591, 1448 cm–1, methoxy group 10[r] ...
5
(Caffeine)(tetrahydroborato)zinc Complex [Zn(BH4)2(caf)]: A New Stable and Efficient Reducing Agent
... of carbonyl compounds such as aldehydes, ketones, α, β- unsaturated carbonyl compounds, acyloins and a-diketones to their corresponding alcohols in excellent yields ...
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<p>Antileishmanial and antitrypanosomal activity of symmetrical dibenzyl-substituted α,β-unsaturated carbonyl-based compounds</p>
... Synthetic α , β -unsaturated carbonyl-based compounds with cyclohexanone, 4-piperidone or tetrahydro-4-pyranone moiety were synthesized (Scheme 1), characterized and reported by us ...
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(Acridine)(tetrahydroborato)zinc Complex [Zn(BH4)2(acr)]: A New Stable and Efficient Reducing Agent
... different carbonyl compounds such as aldehydes, ketones, α, β-unsaturated carbonyl compounds, acyloins and a-diketones to their corresponding alcohols in excellent yields (85- ...
5
SYNTHESIS, CHARACTERIZATION AND ANTIMICROBIAL STUDY OF SOME TRANSITION METAL COMPLEXES OF BIDENTATE CHALCONE LIGAND
... a carbonyl group directly linked to an α,β-unsaturated system (chalcone) and their presumed role in the prevention of various degenerative ...
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Conjugate Addition of Indoles to α,β Unsaturated Ketones Using Bismuth (III) Bromide
... the carbonyl re- quired a higher catalyst loading for optimal reaction time and yield (entries 8, 9, 11 and ...the carbonyl (entry 4) required a higher catalyst ...
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C-C COUPLING REACTIONS CATALYZED BY NANOCRYSTALLINE MAGNESIUM OXIDE
... with carbonyl compounds to give olefinic products with the one pot ...The α,β-unsaturated esters are obtained directly in one-pot in good yields by the reaction of aldehyde with methyl ...
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α,β unsaturated acyl ammonium intermediates in asymmetric organocatalysis
... A switch in enantioselectivity might be expected with a change of olefin geometry, however the reason for low enantioselectivity is not fully understood. If we assume that the s-cis conformation is retained in the ...
239
Aryloxide facilitated catalyst turnover in enantioselective α,β unsaturated acyl ammonium catalysis
... a,b- unsaturated p-nitrophenyl ester, and a recently reported variable-time normalization kinetic analysis method was used to delineate the complex reaction ...
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Development of Enantioselective Organocatalytic Hydrogenation Methods and Progress toward the Total Synthesis of (+)-Minfiensine
... While the effectiveness of catalyst 2 has been discussed, the decreased efficiency of catalyst 15 needs to be explained. We postulate that, in the transition state, interactions of the β-substituents on the ...
163
Towards the Synthesis of Magnesidin
... While investigating the mechanism of the reaction between acid chloride and the iminophosphorane, various phosphorane reactions like Wittig and Wittig related reactions which are very close to the current reaction are ...
226
Ultrasonic study of molecular interactions in some bio liquids
... Ultrasonic parameters are extensively being used to study molecular interactions in pure liquids [6], binary liquid mixtures [7-10] and ionic interactions in single and mixed salt solutions of bio- liquids [11,12]. The ...
5
Nanocrystalline Magenesium oxide / Pyrrolidine Derivatives for Selective and Enantioselective Organotransformations
... of β-nitroamines through the nucleophilic addition of nitroalkanes to ...The β-nitroamines can be further converted into useful building blocks such as 1,2-diamines and α-aminoacids by reduction and ...
14
Enantioselective NHC catalyzed redox [4+2] hetero Diels Alder reactions using α,β unsaturated trichloromethyl ketones as amide equivalents
... substituted α-aroyloxyaldehydes was successfully applied in this process, forming diamides 21, 25-27 in high yields as single diastereoisomers and in excellent ...
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Asymmetric synthesis of tri and tetrasubstituted trifluoromethyl dihydropyranones from alpha aroyloxyaldehydes via NHC redox catalysis
... from α,β-unsaturated trifluoromethylketones and α- aroyloxyaldehydes using an NHC-catalysed redox process has been demonstrated, producing synthetically useful products in good yield, ...
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