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云南师范大学化学化工学院有机化学课件Chapter15 Carboxylic acid derivatives
云南师范大学化学化工学院 有机化学 课件 Chapter15 Carboxylic acid derivatives
2018/6/28
云南师范大学化学化工学院有机化学课件Chapter15 Carboxylic acid derivatives。
Widespread Occurrence and Distribution of Bisphenol A Diglycidyl Ether (BADGE) and its Derivatives in Human Urine from the United States and China
Widespread Occurrence and Distribution of Bisphenol A Diglycidyl Ether BADGE its Derivatives in Human Urine the United States China
2013/12/12
Despite reports of the occurrence of bisphenol A diglycidyl ether (BADGE) and its derivatives in canned foods and consumer products, biomonitoring studies of human exposure to these compounds are lack...
Quantum chemical studies on tautomerism and basicity behavior of some 1,2,4-triazole derivatives
tautomerism acidity constant nucleophilicity
2010/12/29
The acidity constants, relative stabilities, and tautomeric equilibrium constants of some 1,2,4-triazole derivatives were determined using the density functional theory (DFT) with the B3LYP method and...
Ethyl 5-oxo-3-arylamino-2,5-dihydroisoxazole-4- carboxylates as sources of imidazopyrimidine and aminoindole derivatives
Isoxazolones 2-chloropyrimidine 2-chlorobenzoxazole
2010/12/29
The reaction of ethyl 5-oxo-3-arylamino-2,5-dihydroisoxazole-4- carboxylates with 2-chloropyrimidine and 2-chlorobenzoxazole gave the corresponding isoxazolones with pyrimidine and benzoxazole rings s...
Synthesis and antimicrobial activities of some new 1,2,4-triazole derivatives
1,3,4-Thiadiazole 1,2,4-triazole carbamate
2010/12/29
The synthesis of ethyl [3-(cyanomethyl)-5-alkyl-4H-1,2,4-triazol- 4-yl]carbamates (2a-d) was performed starting from ethyl 2-[ethoxy(4- (aryl)methylene]hydrazinecarboxylates (1a, 1b). The treatment of...
Quantum chemical studies on tautomerism and basicity behavior of some 1,2,4-triazole derivatives
1,2,4-Triazole proton affinity tautomerism acidity constant nucleophilicity
2010/12/20
The acidity constants, relative stabilities, and tautomeric equilibrium constants of some 1,2,4-triazole derivatives were determined using the density functional theory (DFT) with the B3LYP method and...
Ethyl 5-oxo-3-arylamino-2,5-dihydroisoxazole-4- carboxylates as sources of imidazopyrimidine and aminoindole derivatives
Isoxazolones 2-chloropyrimidine 2-chlorobenzoxazole rearrangements imidazopyrimidines aminoindoles
2010/12/20
The reaction of ethyl 5-oxo-3-arylamino-2,5-dihydroisoxazole-4- carboxylates with 2-chloropyrimidine and 2-chlorobenzoxazole gave the corresponding isoxazolones with pyrimidine and benzoxazole rings s...
Synthesis and antimicrobial activities of some new 1,2,4-triazole derivatives
1,3,4-Thiadiazole 1,2,4-triazole carbamate antimicrobial activity
2010/12/20
The synthesis of ethyl [3-(cyanomethyl)-5-alkyl-4H-1,2,4-triazol- 4-yl]carbamates (2a-d) was performed starting from ethyl 2-[ethoxy(4- (aryl)methylene]hydrazinecarboxylates (1a, 1b).
Effect of various substituents on intramolecular 1,1-vinylboration, synthesis of 1-silacyclobutene derivatives
organoboration silacyclobutenes NMR
2010/12/3
The reaction of 1-boryl-1-alkenyl chlorosilane derivatives with alkynyllithium reagents [Li-C\equiv C-R3 (R3~=~Ph, SiMe3)] at low temperature (--78 °C) affords alkenyl(alkyn-1-yl)silanes. These compou...
Synthesis and characterisations of some new 2,4-dihydro-[1,2,4]- triazol-3-one derivatives and X-ray crystal structures of 4-(3-phenylallylideneamino)-5-thiophen-2-yl-methyl-2,4-dihydro-[1,2,4]triazol-3-one
bromo acetophenone X-ray crystallography antimicrobial activity
2010/12/3
Compounds 2 were synthesised via the reaction of 4-amino-5-thiophen-2-yl-methyl-2,4-dihydro-[1,2,4]-triazol-3-one (1) with aldehydes. Compounds 3 and 4 were obtained from compounds 2 with bromo acetop...
Co(III) catalysed asymmetric ring-opening of epichlorohydrin by salicylaldehyde derivatives: reversal of enantioselectivity and rate acceleration on addition of AlCl3
Asymmetric catalysis salicylaldehyde Co(III) salen aryloxy alcohols epoxide ring-opening
2010/12/3
Using asymmetric Cobalt(III) salen catalysts, the ring-opening of epichlorohydrin by 2,3-dihydroxybenzal- dehyde and 2,4- dihydroxybenzaldehyde was found to occur at the phenolic groups most distant f...
Effect of Various Substituents on Intramolecular 1,1-Vinylboration, Synthesis of 1-Silacyclobutene Derivatives.
Alkynylsilanes triorganoboranes hydroboration organoboration
2010/10/19
The reaction of 1-boryl-1-alkenyl chlorosilane derivatives with alkynyllithium reagents [Li-C≡C-R3 (R3 = Ph, SiMe3) ] at low temperature (–78 ◦C) affords alkenyl(alkyn-1-yl)silanes. These compou...
Synthesis and Characterizations of Some New 2,4-Dihydro-[1,2,4]-triazol-3-one Derivatives and X-Ray Crystal Structures of 4-(3-Phenyl allidene amino)-5-thiophen-2-yl-methyl-2,4-dihydro-[1,2,4]triazol-3-one
1,2,4-Triazole aldehydes ethyl bromoacetate bromo acetophenone
2010/10/19
Compounds 2 were synthesised via the reaction of 4-amino-5-thiophen-2-yl-methyl-2,4-dihydro-[1,2,4]-triazol-3-one (1) with aldehydes. Compounds 3 and 4 were obtained from compounds 2 with bromo acetop...
Co(III) Catalysed Asymmetric Ring-Opening of Epichlorohydrin by Salicylaldehyde Derivatives: Reversal of Enantioselectivity and Rate Acceleration on Addition of AlCl3
Asymmetric catalysis salicylaldehyde Co(III) salen
2010/10/19
Using asymmetric Cobalt(III) salen catalysts, the ring-opening of epichlorohydrin by 2,3-dihydroxybenzaldehyde and 2,4- dihydroxybenzaldehyde was found to occur at the phenolic groups most distant fro...
Heterocyclic synthesis using nitrilimines: part 14. Synthesis of new pyrazole derivatives
Nitrilimines 1,3-dipolar cycloaddition phthalides pyrazoles
2010/10/18
A new series of 1,3,4,5-tetrasubstituted pyrazoles have been synthesized by the 1,3-dipolar cycloaddition of suitable nitrilimines to 3-propylidene and 3-benzylidene-phthalide. Both analytical and spe...