搜索结果: 1-10 共查到“知识库 heterocyclic”相关记录10条 . 查询时间(0.187 秒)
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...
Effect of cooking methods on the formation of heterocyclic aromatic amines in chicken and duck breast
Heterocyclic aromatic amines Cooking method Formation Chicken meat Duck meat
2012/8/13
Heterocyclic aromatic amines (HAAs), potent mutagens/carcinogens, are pyrolysis formed during the cooking of meat and fish. In the present study, the effects of various cooking methods, pan-frying, de...
Picolyl substituted N-heterocyclic carbene/palladium catalyzed Heck reactions
Heck reaction imidazolinium salt palladium
2010/10/18
Novel 1,3-dialkylimidazolinium and 1,3- dialkyltetrahydropyrimidinium hexafluorophosphate salts as N-heterocyclic carbene precursors were prepared by reacting N,N'-dialkylethandiamine or N,N'-dialkylp...
Heterocyclic Amines in Several Types of Cooked Meat and Chicken Dishes which Form Part of the Korean Diet
Heterocyclic amines Muscle meats Mutation Korean diet
2009/5/8
Heterocyclic amines (HAs) are formed in protein-rich foods during high temperature cooking such as frying and grilling. The amount of HAs formed in several of the most frequently eaten food dishes in ...
Solid-phase organic synthesis of heterocyclic compounds
combinatorial chemistry solid-phase organic synthesis (SPOS) heterocycle
2009/3/5
Combinatorial chemistry has become an important tool in both drug discovery and chemical biology and its continued success is dependent, in part, on further advances in solid-phase organic synthesis...
Studies on the synthetic development for the discovery of novel heterocyclic agrochemicals
lead generation bleaching herbicides iminothiazolines triazolylpyridines
2009/3/5
Various heterocyclic compounds have significantly contributed to current commercial agrochemicals. We focused our attention on these heterocycles as screening targets to create novel bioactive compo...
Synthesis of Some New 4-oxo-4H-Chromene Derivatives Bearing Nitrogen Heterocyclic Systems as Antifungal Agents
Chromone nitrogen heterocycles antifungal activity
2010/4/16
Some new 4-oxo-4H-chromone derivatives bearing nitrogen heterocyclic systems were achieved by treatment of 3-[(4-aminophenylimino) methyl]-6-chloro-4-oxo-4H-chromene (2) with some aldehydes, cyclic ox...
Cyanoacetamide Derivatives as Synthons in Heterocyclic Synthesis
Cyanoacetanilide thiophene pyrazole thiazole pyridine pyridazine pyrimidine heterocycles
2010/4/16
This review presents a systematic and comprehensive survey of the methods of preparation and the chemical reactivity of cyanoacetamide derivatives. These compounds are important intermediates for the ...
Biosynthesis of food constituents: Amino acids: 2. The alanine-valine-leucine, serine-cysteine-glycine, and aromatic and heterocyclic amino acids groups – a review
biosynthesis amino acids alanine valine leucine serine glycine cysteine phenylalanine tyrosine tryptophan histidine
2014/3/17
This review article gives a survey of principal pathways that lead to the biosynthesis of the proteinogenic amino acids of the alanine-valine-leucine group starting with pyruvic acid from the glycolyt...
Heterocyclic Synthesis Using Nitrilimines: Part 5. Synthesis of Some Novel Spiro Heterocycles
Cycloaddition benzoylhydrazones nitrilimines spiro-triazoles
2010/4/19
A new class of spiro-triazoles (4a-m) were synthesized from the reaction of corresponding nitrilimines 2 with substituted heterocyclic benzoylhydrazones 3 in good yields. The spectral data of the new ...