The pyrazine compound refers to a heterocyclic compound containing two nitrogen atoms at the 1,4 position of the benzene ring. It is an isomer with pyrimidine and pyridazine. Has a weak aroma, similar to pyridine. The electrophilic substitution reaction is not easy to occur, but it is easy to react with the nucleophile. After the hydrogen on the carbon atom is replaced by a methyl group or a halogen, the hydrogen on the halogen or methyl group is active. In nature, its pure product rarely exists, but its structure exists in folic acid, which constitutes the part of the pterostilbene. Industrially, ethanolamine is used for dehydrogenation under gas phase catalytic conditions. Pyrazine derivatives have many applications, such as dibenzopyrazine, which is an important dye, and phenazine is known for its antitumor, antibacterial and diuretic properties. Tetramethylpyrazine has been reported to capture superoxide anion and reduce the production of nitrogen oxides from human granulocytes. Citric acid salt of hexahydropyrazine (or piperazine) is a commonly used animal repellent and is particularly effective against aphids. 2,5-diketopiperazine is an agent for preparing a peptide compound. Pyrazine fragrances generally have the characteristics of roasting, nutty, popcorn, coffee, etc.; although it does not have the characteristics of meat flavor, it is a commonly used spice in the flavor of meat flavor, which can make the flavor of the barbecue grill and the overall flavor is more full.
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Amino compound
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Oxy-containing amino compound
Cycloalkylamines, aromatic monoamines, aromatic polyamines and derivatives and salts thereof
Acyclic monoamines, polyamines and their derivatives and salts
Amide compound
Sulfonic acid amino compound
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Alcohols, phenols, phenolic compounds and derivatives
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2-cycloalcohol
Halogenated, sulfonated, nitrated or nitrosated derivatives of alcohols
Extremely halogenated, sulfonated, nitrated or nitrosated derivatives of phenols
Phenol and its halogenated, sulfonated, nitrated or nitrosated derivatives
Acyclic alcohol
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Nitrogen-containing compound
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Nitrile compound
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Organic derivative of hydrazine or hydrazine
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Terpenoid
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Ether compounds and their derivatives
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Ether, ether alcohol
Halogenation, sulfonation, nitration or nitrosation of ethers, ether alcohols, ether phenols
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Aldehyde
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Carboxylic compounds and derivatives
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Cyclic carboxylic acid
Halogenation, sulfonation, nitration or nitrosation of carboxylic acids
Halogenation, sulfonation, nitration or nitration of carboxylic anhydrides
Carboxylic acid halide
Carboxylic esters and their derivatives
Salt of carboxylic acid ester and its derivatives
Acyclic carboxylic acid
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Hydrocarbon compounds and their derivatives
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Aromatic hydrocarbon
Cyclic hydrocarbon
Hydrocarbon sulfonate
Hydrocarbon halide
Hydrocarbon nitrite
Acyclic hydrocarbon
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Ketone compound
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Alkyl ureas and their derivatives and salts
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Inorganic acid ester
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Heterocyclic compound
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Diazo, azo or azo compound
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Organosilicon compound
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Organometallic compound
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Organic palladium
Organic germanium, cobalt, strontium, barium, gallium, germanium, germanium, germanium, germanium, etc.
Organic calcium
Zirconium
Organic potassium
Organic
Organic lithium
Organic
Organic aluminum
Organotin
Organic manganese
Organic sodium
Organic nickel
Organic titanium
Organic iron
Organic copper
Organotin
Organic zinc
Organic
Organic
Organic germanium, mercury, silver, platinum, etc.
Organic germanium, antimony, bismuth, tungsten, antimony, bismuth, lead, vanadium, molybdenum, chromium, antimony, etc.
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Organic sulfur compound
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Organic phosphine compound
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Organometallic salt
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Organic fluorine compound
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Fluorobenzoic acid series
Fluorobenzonitrile series
Fluorobenzaldehyde series
Fluorobenzyl alcohol series
Fluoroanisole series
Fluoroaniline series
Fluorophenylacetic acid series
Fluorophenol series
Fluorobenzoic acid series
Fluoronitrobenzene series
Fluoropyridine series
Potassium fluoroborate series
Fluorobenzyl alcohol series
Fluorotoluene series
Fluorine red series
Fluoroethane series
Fluoropropane series