A possible explanation for the lack of hypersensitivity to salicylic acid by patients known to be allergic to aspirin is offered. It is shown that while aspirin reacts with amino acids to produce salicylamide derivatives, salicylic acid does not. This may be the mechanism by which aspirin ...
The accumulation of biogenic amines in foods is mainly due to the presence of bacteria able to decarboxylate certain amino acids. Biogenic amines are formed when the alpha carboxvl group breaks away from free amino acid precursors. They are colled after the amino acid they originated from. The...
Fluorescamine is intrinsically nonfluorescent but reacts rapidly with primary aliphatic amines, including those in peptides and proteins, to yield a blue-green–fluorescent derivative (Figure 1.8.1). Modifications to the reaction protoc...
Similarly, secondary amines can also react with ketones and aldehydes to form enamines. R2NH + R′(R″CH2)C=O → R″CH=C(NR2)R′ + H2O Basicity of Amines Unlike ammonia, amines serve as bases and are reasonably strong (for some examples of Ka conjugate acid values, see the table...
which subsequently react with alkenes to form C(sp3)–C(sp3) bonds. The operationally straightforward reaction exhibits broad functional-group tolerance, facilitates the synthesis of drug-like amines that are not readily accessible by other methods and is amenable to late-stage functionalization applicat...
Sign up with one click: Facebook Twitter Google Share on Facebook amine (redirected fromPrimary amines) Thesaurus Medical Encyclopedia Related to Primary amines:Amino functional group a·mine (ə-mēn′, ăm′ēn) n. Any of a group of organic compounds of nitrogen, such as ethylamine, C2H5...
Formaldehyde reacts with primaryaminesandsince the antibody combining site often involves electrostatic interactions, modification [...] labome.com labome.com 甲醛可与伯胺作用,因为抗体含有结合位点通常带有静电相互作用,赖氨酸固定修饰可避免抗体与固定蛋白结合。
He noted that hypochlorous acid salts react with α-amino acids in the same manner as they do with amines to form monochlorinated or dichlorinated derivatives. Then, the decomposition of chloro-amino acids leads to the corresponding aldehydes or ketones, ammonia, carbonic acid, and sodium ...
Amines are reacted with phosphorous trichloride to form N-dichlorophosphinoamines that are then reacted with a bisphenol in about equimolar amounts to provide polyphosphoramidite oligomers. The polyphosphoramidite oligomers are effective... DW Chasar - US 被引量: 28发表: 1985年 An Efficient and ...
The invention also relates to optionally using catalysts to accelerate the reaction rate of the secondary amine and aldimine compounds with isocyanate compounds. The catalysts used in this invention are aromatic or aliphatic carboxylic acids or arylsulfonic acids as described in the cited prior art. ...