Organic Chemistry

Though there is hydrogen bond between the molecules of glucose then how it forms hydrogen bond with water when dissolving ?

Dear all, Unfortunately my chemistry isn't up to much. I was therefore wondering if anybody might please be able to help assist in identifying/naming the common group in the image attached? If possible I was also hoping to putatively name any simple 11-15 hydrocarbon compounds which exhibit this group at one of their terminal ends? Any/all help is very much appreciated. irisscientist

I know very little about bark and I did extraction of bark of a tree with water by cold extraction. It yielded good quantity of crude extract and when I applied the same onto Diaion hp-20 column i got fractions. The first fraction which is eluted with water is in reddish cherry color and no observable TLC spot. When I kept this particular fraction overnight at RT some white color compound started precipitating. It looked great for a moment but the problem is when I again tried to dissolve it in water it didnt dissolve. What could be wrong here? What kind of compound it could be? Many more thanks in advance.

hi.I Wanted to know how it is possible to combine the following article found or a way to synthesize it? Or if you can find me.'m Grateful. Acetic acid 2a,7,10-trimethyl-3-oxo-2,2a,3,4,4a,5,6,7,7a,8,10b,10c-dodecahydro-naphtho[2,1,8-cde]azulen-5-yl ester

If after one performs an organic rxn and wants to purify their sample of both soluble and insoluble impurities, is there a correlation to temp where insoluble impurities are removed when the sample is hot and then soluble are removed after the compound has crystallized? Or is it more case by case basis? Also why are some impurities removed when the sample has not crystallized and others removed after the sample has crystallized?

This is a question that requires some practical knowledge. I've looked through the literature (Google Scholar, SciFinder, etc.), and I simply cannot find hard data on this, which is frustrating. How soluble is sodium chloride/bromide in dichloromethane? Obviously it's not very soluble at all, but I'm looking to do a salt metathesis that depends on it being very insoluble. The other salt that will form in this metathesis should be very soluble in DCM and may stay insolution with a little toluene added, which I could use to suppress the solubility of the NaCl/Br. All reactions will be carried out in anhydrous conditions. Anyway, just wondering if anyone has any dire…

First off, hey everyone, this is my first post on these forums. Im just a curious college student who's majoring in bio. But that's not important, what I want to know is what can possibly happen between 4 tablespoons of 80 proof vodka and 2 tablespoons of powdered cinnamon, stirred up, and left to sit at room temperature for, oh say, one whole year? Yep, a loooong time ago I saw a mythbusters episode where they were debating what mouthwashes work best, and they did a cinnamon and vodka mix that stood for, IIRC 4 weeks, (it came out still liquid and tinted very red), and that for some reason made me want to try it. So I took some vodka and some cinnamon and put it in a…

Hi there, I have a question regarding a chemical produced by two different manufacturers, both of which claim it to be the structure seen in this image. One of the NMRs is attached as a PDF, the other is inset. To me, the one in the inset does not look like the same structure, but the PDF Does seem to match. However, I am no NMR expert. My knowledge is very limited. Yet this seems fairly obvious. Would anyone with some expertise here care to comment on the differences between these two NMRs? cb2.pdf

Hello, my teacher gave me this question and seems like none of my classmates know the answer. I understand that first I have to find a compund that reacts with HCL to find the first letter "A" but how do I do that? Thank you in advance for the ones willing to help me Compound X was treated with Hydrochloric acid to give compound A, a primary substituted compound. Compound A was then treated with aqueous sodium hydroxide to give compound B and sodium chloride as products. Compound B was oxidized to compound C which was further oxidized to compound D. Compound D was found to have a formula of C3H6O2 and had a pH <7. Compounds B & D reacted with one another in the…

Once I vacuum out the solvent I'll be left we a rigid film at the bottom of the flask. How can I collect this? Normally the solution is vacuumed in a chamber where the material is more accessible and can be scraped out with a razor blade. Chambers can be costly. Any ideas or has anyone ever seen a little scraping tool that would fit in the flask? Thank you!!!

Does anybody know how to make olivetol (5-Pentylresorcinol; 5-Pentyl-1,3-benzenediol)? Any help is much appreciated.

Hi, I was wondering if anyone can help me understanding how these reactions work. What is happening by adding CuSO4-5H2O, [NH4+][OH-] and HONH2-HCl (hydroxylammonium chloride) together in an aqueous solution? Is it forming a diazonium salt solution? And when we are mixing the above solution with another diazonium salt [(HO-Benzenering-N-=-N-+)(Cl-)] in a diethyl ether solution what product are we expected to have? Will be azo coupling reaction occurred? I am trying to synthesize a dihydroxyazobenzene and I found this synthetic procedure from a patent. Any idea will be well accepted and appreciated!! Thank you in advance!

Hi I am working on a paper on nanoparticles comprising a polymeric component as well as a component of inorganic semiconductors (such as TiO2, ZnO ...). Primarily I am interested in such nanoparticles that are designed to enhance the efficiency of solar cells. What I am looking for is a paper/publication that gives an overview over the chemical methods that are being used to make such nanoparticles. Or any publication on the matter. Any hints or links are greatly appreciated!

Hi, I am very very new to chemistry and to chemical molecule modelling, so please bear with me. I am looking for a 3D file for Emamectin benzoate. I know Pubchem has many chemical files, but for this particular one, it only has 2D. Perhaps there is an obvious reason for this that I am unaware of. I want to use it to build a physical real-life model. I am currently using Avogadro to view the files and am on a Mac. Many humble thanks, Tanja

I am trying to make a compound. The problem is that I can't keep it from self-polymerizing because a byproduct of the synthesis is concentrated HCl (see below). I ran this rxn yesterday by adding SiCl4 dropwise to the diol under N2at 0oC and it still polymerized. Does anyone have a good suggestion for a solvent or a neutralizing agent to put in the RB to preserve my desired product? Note: It cannot be aqueous because the SiCl4 reacts VERY violently with water. Thanks for your help!

does everybody access to this article: http://www.sciencedirect.com/science/article/pii/S1011134410002587 if yes, please send it to my email: m.nazari03@yahoo.com thank you.

Hi everybody! Who can tell me DPD1, DPD2, DPD3, DPD4 formula? i searched on the internet but i couldnt get any information about it. Please help me! Thanks in advance!

Super glue seems to react with cotton or wool to give smoke and fire. But, why does this happen. Is the -oh groups from cellulose causing the cyanoacrylate to harden or something ?

I am supervising a student who would like to investigate factors affecting the hydrolysis of tannic acid into gallic acid. We came up with the idea of using oxidation with acidified permanganate or dichromate as a means of monitoring the process. However I can't find any information online or in any texts that explain this oxidation process. All I managed to dig up is some info that states oxidation of o,p substituents of dihyroxybenzenes is easy. Can anyone give me some info on what happens during the oxidation of gallic acid under these conditions? My reasoning tells me that only the para group will undergo oxidation with the two meta substituents being unaffe…

PLS KINDLY ADVICE ONCE MORE ON HOW TO SYNTHESIZE HYDROXYCARBAZOLE AT ANY POSITION, CARBAZOLE ALDEHYDE AT ANY POSITION AND CARBAZOLE CARBOXYLIC ACID AT ANY POSITION WITHOUT USING MICROWAVE IRRADIATION METHOD. THANKS

I'm reading a book: Art of Drug Synthesis It uses an alinine molecule and an attached R-group, which appears to be on the pi-bonds of the cyclical carbon molecule. I don't know what that represents, at least what kind of bond that represents. I've never seen such a carbon-skeleton framework used before. What does it represent?

pls I need a guide on how to synthesize hydroxyl derivative of carbazole but not through microwave irradiation because we don't have such equipment in our lab. also, synthesis of carbazole aldehyde and carbazole carboxylic acid

An experiment that I am replicating calls for filtering of the product through a pad of Celite 545 but all I have is finely ground Celite 545 powder. Would it be enough to just filter the liquid product through a fritted glass Buchner funnel or should I put a layer of the Celite 545 on top of the filter as well? Basically, what is the role of Celite 545 in this experiment and do I have to use it? Because it is so finely ground I am worried about pulling it into my filtrate. Thanks for your help!

I know that diastereomers have different physical and chimerical properties. I was reading online that diastereomers can be distinguished from one another based on their spectra. I have a hard time understand this because don't diastereomers differ in a chiral center light polarization-- yet all the functional groups are exactly the same?

I work with carbazole and it alkyl derivatives, what reagent can I use to spray the tlc plate