Organic Chemistry

Coenzyme A is very important Enzyme that we get from Pentothenic acid . But i am not able to find a mechanism at the level of new bonds formation and destruction that could tell how exactly 1 : Co enzyme A works and 2: how it is converted into acetyl coenzyme a 3: how acetyl co enzyme synthstase works what are the active sites that hold the substrate and co-A..

Good evening guys.. I have a question of which I’m hoping someone can possibly assist me in.. if you have Putrescine Hydrochloride in ‘Salt’ formation then why is it that it doesn’t emit an odor? Does it have to be activated by something additional? Thank you. Matt.

I need this reaction ( maybe u can assume ) and a way to whiten the pages of a book without erasing ink ( also u can assume:))

Hello everybody! I have tried to dissolve Tadalafil Raw powder in Propelyne Glycol with no good results does not dissolve good. Any suggestions to how to dissolve the powder with Drinkable solution? Do i need heat process? temp etc? Product Name: Tadalafil Other Name Cialis; Tadalafei CAS No. 171596-29-5 EINECS NO. 200-835-2 MF: C22H19N3O4 MW: 389.404 Melting Point 298-300ºC Boiling point: 679.1±55.0 °C at 760 mmHg Flash point: 364.5±31.5 °C Density 1.5±0.1 g/cm3 Thanks in advance.

If a teaspoon of urine and one glass of water is consumed the cough problem of a patient will be cured .what makes these chemicals like urine water from the rice fields used in tablets unique Is it because they are organic chemicals??

In our work we use Grewe condensation (condensation of benzyl-substituted octahydroquinoline to morphinan structure). Our chemists pronounce it as "Gryu condensation" which corresponds to English version of reading Grewe. However the chemist Rudolf Grewe was German, so my guess that the correct pronunciation should be "G-r-e-v-e" . Could somebody clarify it?

Hi, what is the difference between reactivity of alifatic alcohol and phenol? Can you give me an example where it's noticeable the most?

I found out that many reactions with -OH and -SH are similar. Is there any important exception where a mistake can be made?

Hi, what is ther priority of functional groups with oxygen?

Hello there! Can anyone please tell me how to theoretically synthetize 1-cyclopentylpropan-1-amine from cyclopentene in exactly 6 steps (no more, no less steps)? Thank you for all your answers!

Hello, all! I was wondering if there was anyway to produce s-adenosyl methionine in vitro? Links to studies or general advice would be greatly appreciated! Thank you

I want to synthesis a polyimide from a diamine and a dianhydride in lab scale, in two-step synthesis route for fabrication the polyimides, in the second step, acetic anhydride and pyridine are added to the reaction mixture to separate the H2O and formed polyimide from polyamic acid, but how determined the amounts of this reagents?

I’m having a little trouble with a reaction and was hoping someone could help me. I’m trying to make a maleic anhydride compound, but the compound is not there in the final step. My procedure is as follows: To a clean and dry RBF fitted with a reflux condenser and a 1” stir bar, 20mL of dry ether and 0.004mol maleic anhydride are added. The mixture reflexes at room temperature under argon until the maleic anhydride is dissolved, at which point 0.004mol 4-aminopiperidine in 8mL dry ether is added. A white solid immediately precipitated, and the mixture stirs for an additional hour before being evaporated under reduced pressure. The resulting white powder was determin…

Hello.I am just wondering whether it is possible to combine the hydroxy group of 4-Hydroxy-1-naphthalenesulfonic acid sodium salt to another compound with -COOH group via esterification? If so, what are the appropriate reagents used for this?

I need help with this molecule. How its going retrosynthesis? I have tomorrow exam, please help me!

Hi, I'm a new teacher and want teach about endotermic reactions to make chemistry lessons to be funnier. I'm searching reagents for endothermic reactions. The reactions should be follow with the followings restrictions. Restrictive conditions: 1. The reagents and the products must be safe for health (after all it is for kids :)) 2. soluble in water (not have to be very soluble) 3. product and reagents must to smell good Optional conditions: 1. One of the reagents should be made from resin (with reactive functional groups). 2. There is an option to inhibit the reaction. (and what is the option?) 3. the temperature drop shou…

Hello everyone, As we have studied that when doing the Nitration of Acetophenone the major product that is meta directive. Is it possible to nitrate Acetophenone in such a way that the major product that is obtained is ortho directive? Maybe with the help of a catalyst maybe? Thanks,

Hi, I'm a new teacher and want teach about endotermic reactions to make chemistry lessons to be funnier. I'm searching reagents for endothermic reactions. The reactions should be follow with the followings restrictions. Restrictive conditions: 1. The reagents and the products must be safe for health (after all it is for kids :)) 2. soluble in water (not have to be very soluble) Optional conditions: 1. One of the reagents should be made from resin (with reactive functional groups). 2. There is an option to inhibit the reaction. (and what is the option?)

I'm trying to do the reaction shown here, but when I perform it I simply get two spots after w/u with DCM/H2O which are masses 213 and 251 (both +/- 1). sans an NMR, what might these two products be and how could I prevent their formation? Any ideas? Thanks!

Hi First i made mixed Nitric acid + acid salt With this solution mercury is processed 3 times (every time used new acid) then i have got orange color solution and mercury is completly dessolved. Please tell me how i recover mercury from this solution

Does oxazole ring absorbs UV light at 254nm? Will it be visible on a TLC plate under UV?

Hey guys, I need to fluorinate a fluorenyl piperazine fragment for an NMR experiment I'm running, and I'm not quite sure what the best way to go about it would be. I'm striving for the uni- or bilaterally fluorinated product preferably at the 1-position (or 1 and 8, bilaterally) for reasons related to protein binding sterics. However, fluorination at any of the 1-8 positions, either uni or bilaterally would still be acceptable. I'm asking here since scifinder hasn't been able to lead me in the right direction so far, so I'm hoping someone here might know where to start. Thanks!

Which reaction is true? Or maybe both?CH3OH + 2CuO = HCOOH + 2 Cu + H2OCH3OH + 2CuO = HCHO + Cu2O + H2OHow to explain this since the ratio of substrates in both reactions is the same. link removed

Rgarding to Mannich reaction between amide and secondary amine, I had 2 spots one matching the reactant and another is different, I have 2 question 1. The technique can be followed ? Best technique to be used in synthesis of amide-amine Mannich ? 2. Can I separate these 2 spots ?

Anybody know how Herrman's catalyst work in Heck reaction?