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[HgI4]-(aq) reacts with the lone pairs of nitrogen that are present, then the typical off-white precipitate falls out. A uncharged mercury salt is thus obtained. In some alkaloids there isn't a reaction with Mayer's reagent because it lacks lone pairs (example berberine) and it reacts also with alkaline peptides. This mechanism is actually similar then Dragendorff's reagent.
what is the reaction mechanism between acrylic acid,4-vinyl pyridine
electrophilic substitution. and UV light or heat is required to all the reaction to proceed
Click the related link below to see the mechanism for the condensation reaction between semicarbazide and a carbonyl compound to form semicarbazone.
Alkaoids are in the biology and alkalis are in. The chemesyry
what is the reaction mechanism between wagner's reagent and alkaloids
The reaction mechanism between these two chemicals involved an aromatic carbon. The typical classification of this reaction is called a condensation.
[HgI4]-(aq) reacts with the lone pairs of nitrogen that are present, then the typical off-white precipitate falls out. A uncharged mercury salt is thus obtained. In some alkaloids there isn't a reaction with Mayer's reagent because it lacks lone pairs (example berberine) and it reacts also with alkaline peptides. This mechanism is actually similar then Dragendorff's reagent.
what is the reaction mechanism between acrylic acid,4-vinyl pyridine
electrophilic substitution. and UV light or heat is required to all the reaction to proceed
Click the related link below to see the mechanism for the condensation reaction between semicarbazide and a carbonyl compound to form semicarbazone.
Alkaoids are in the biology and alkalis are in. The chemesyry
process is process and mechanism is mechanism.
There are Ephedra in around 40 plants from around the world. But not all of them contains Ephedrine Alkaloids which is known for promoting an effective weight loss. Sida Cordifolia does contain Ephedrine Alkaloids, around 2.2% which is a little less than the "King" of Ephedra Sinica that contains 3.3 Alkaloids. In the Alkaloids between 40 and 90% is Ephedrine.
The difference between a reflex and a feedback mechanism is that the former is done without action by the brain but the latter is consciously done with feedback from the brain. A reflex is the reaction to external stimuli. Feedback to the brain can be given due to external or internal (within the body) reason.
Ephedra Exist in around 40 plants around the world. Some of them like Ephedra Sinica or Cordifolia contains Alkaloids. Between 40 and 90% of the Alkaloids is Ephedrine. Ephedra plants like Nevadensis or Viridis only contains Ephedra and not Ephedrine.
Well alkaloids, as you know, are nitrogen containing compounds commonly seen in pharmacology as narcotics. Now your question is horribly incomplete because you could mean what are the reactions between two alkaloids or between an alkaloid and something else; morphane family compounds use their substitution about the nitrogen (and the closeby Quaternary carbon) to position electron pairs in the right orientations of the neuro-receptor to induce the narcotic effect (in a nutshell) - on another note, the less substituted Nitrogens on some other alkaloids can be protected with a number of methods in synthesis or even used as drugs for receptors different from those of the morphane family. Don't ask questions that are... well... not good questions - elaboration is your best friend.