Organic Chemistry

I have seen a number of Tetrahydroquinoline derivatives turning dark green from pale yellow after synthesis, as dry powders and in solvent. What it looks like on TLC: The dark green substance seems to be very polar and barely migrated. What's more, the spots in the middle of the TLC plate also turned dark green overnight. Did any possible spontaneous reaction happened to those compounds?

Is mild white turbidity a positive result for iodoform test in a sample suspected to contain ethanol?? Also shouldnt glucose n other sugars also show positive for test for alcoholic group....what bt iodoform test with glucose ?

So I read about the various nonpolar aromatics present in whiskey and decided I would try to separate them out (I was bored). I measured 2 mL of Jefferson creek whiskey and 3 mL of xylene into a vial, mixed and then centrifuged for 5 minutes. When I looked at the vial, there was the organic phase on top, relatively clear and then below that was a solid white precipitate, with a color exactly like egg whites. Below the white precipitate was the aqueous phase, consisting of a brown, clear liquid from the whiskey. When I pipitetted the white liquid out and mixed it with xylene, I found it was NOT miscible with the xylene and was therefore hydrophilic. I really have no idea w…

Starting with an organic mesh of fibres (cartilliage), my body can produce a strong, flexible and highly rigid ceramic structure from calcium phosphate (bone). I'd like to engineer plants to make similar structures but with stronger, engineering grade ceramics (like maybe Al2O3 or SiC) so I can grow my own cities. Try as I might, this is actually really hard to look up; upon reference to a few biochemistry books and a precursory googling, I can't seem to find very much on the biochemistry of ossification at all (bone formation). I know it isn't quite a diffusive process, though perhaps it is like crystal formation in a solution or something, but ultimately I'm stuck…

i do not have acetic anydride in my reach and want to do this reacytion 50 g phenylacetic acid, 25 g anhydrous sodium acetate and 850 ml acetic anhydride are refluxed with stirring under moisture protection for 40 h. wich produces phenylacetone. so wat other solvent is best to use, instead of acetic anydride.

Hi there, I'm a chemistry student in University just now and I've got a synthesis problem that is confusing me slightly. I can't seem to find help in any of my textbooks. The starting molecule for the reaction is a ketone. The reagents for use are H2, a platinum catalyst and a carboxlic acid molecule. It is my understanding that the ketone will be reduced by the hydrogen and catalyst, to a secondary alcohol. It is also my understanding that the carboxylic acid cannot be reduced under these conditions as stronger reducing agents are required. I am now wondering if the secondary alcohol and carboxylic acid will react together to form an ester? This would be the obvious…

I took organic chemistry about 7 years ago and did fairly well. So, I thought I would be able to help tutor a university student even though I haven't done it since that time; however, we are getting into chemical synthesis and I am starting to realize that there is a lot I don't remember. Can anyone point me in the right direction here? The student has to synthesize the following chemical compound (I have attached the image to this message). We must start with organic reagents no larger than 2 - 3 carbons, or benzene. Any inorganic reagent can be used. Any help is appreciated! Thanks

Hi everyone Asked is to give all possible elimination products after elimination of 3-methyl-butan-2-ol in a sulfuric-acidic/water environment. The answer would be: (mostly) 2-methyl-but-2-ene (a bit) 3-methyl-but-1-ene Why can't 2-methyl-but-1-ene be formed? It's not like the second possibility is conform Zaitsev's rule so... Why not 2-methyl-but-1-ene? Thanks! F.

How do we find the what kind of electronic transition it is for a molecule computationally? How do we arrive at any of the following transition for any UV-Vis spectroscopy of organic molecules. σ → σ*π → π*n → σ*n → π* Can someone please tell me how it is done.

I'm trying to clean a heavily stained broiler pan that is covered in lots of oily, black deposits from cooking. Are most of the deposits just charred carbon, or mostly nonpolar substances "cooked" on to the pan? I was thinking about using xylene, or some other nonpolar solvents to possibly dissolve the deposits...or is the only way to clean it is by the casual soap and elbow grease..I hope not ~EE

Let me say that I have no wish to go boom. I have (and recommend) a healthy respect for explosive gasses. Reading the Darwin Awards is fine, I have no intention of qualifying for one. I asked this question on another forum and got nowhere because "someone stupid might do something bad" if it was discussed. There are 60,000 biogas cookstoves used in Nepal everyday and I don't see why the technology can't be used intelligently here. That said, I'm interested in small-medium scale biogas production for electricity production (~1-3 KW) for a remote greenhouse. The issue is that the gas is produced continuously so I can either find a generator that will use it at nea…

I did an experiment in which I added 0.2116 mols acetic anhydride to 0.0222 mols glucose to form 0.0178 mols glucose pentaacetate. I am attempting to calculate the limiting reagent, but I can't balance the equation properly! What I get is: 15 C4H6O3 + -2 C6H12O6 = 3 C16H22O11 How am I supposed to calculate a limiting reagent with negative numbers? Thanks!

I been trying make a perform so I could sell it. I tried using Alcohol at a base but somehow it keeps evaporating. What am I doing wrong? I thought most perfumes used Alcohol as a base and you can tell from the strong scent they usually have that there is some of it in there. Why does it evaporate? Is there something else I need to add? I know where to get extracts and other scents. I know how to make home made toothpaste, Soap, Shampoo and various other products. Perfume seems to be a little more complicated. I also heard that people generally use Alcohol as a base for things since chemicals will stick better to alcohol vs water. I also know how to make home made lipstic…

If anyone could help, I've been at this for many hours and I can't figure out how! Thank-you! Propose a mechanism for the synthesis of Phthalic acid. Taking into account that you have the following organic reactants and any inorganic reactants, gases and material that you need. We have only learned the following reactions so I think I'll have to stick to these for the midterm: Electrophilic addition reactions (hydrogen halides, hydrogen bromide in the presence of peroxide, addition of halogen-Cl2 or Br2, Acid catalyzed addition of h20 and alcohols, oxymercuration-reduction, alkoxymercuration-reduction, hydroboration-oxidation, and addition of H - H2 and Pt/c etc. An…

Hi all, I am of the understanding that when a carbonyl group is in a sterically hindered environment on an enone the grignard reagent instead chooses to opt to react with the alkene group on the enone instead. (More specifically cleavage of a hydrogen atom). I have to write out a mechanism for this but i can't get to grips with it. It would be much appreciated if someone could outline a general mechanism of a reaction of this type with the sterically hindered carbonyl group! or alternatively point me to a webpage or ebook that can! as i have scoured the web to no avail. Thanks, shaneo!

When synthesising brombenzene by reacting benzene with bromine and ferric turnings as a catalyst one gets not only the desired bromobenzene, but also di- and trisubstituted products. Now, since bromine is deactivating substituent, but still directs further substituents to ortho and para positions, what would be the structure of these sideproducts? Dibromobenene could either be 1,2 or 1,4, but what about tribromobenze?

Hey guys, I am trying to figure out the structure from IR/NMR but I am completely lost. The molecular formula is C15H33N. I attached a picture of the graphs. Thanks!

I was wondering if anyone knew if it was possible to remove glycine from glyphosate (herbicide), leaving methylphosphonic acid?

Good cinnamaldehyde: Great smell. I put some cinnamon bark in water and boiled it to fill the house with wonderful vapors of this aromatic aldehyde the other day. My mother, for once, did not object. vanillin: People look at me strange when I sniff vanilla extract. dilute ozone: Our hot tub has a corona discharge ozonator. I get a whiff of the gas every time I open the lid. dilute chloroform: Working with this is pleasant. However, it becomes nasty as your nose approaches the container in which it is in. ethanol: I always sniff my glass of wine before I drink it. Lovely smell. toluene: This is pleasant to work with, eg when marking somethi…

Hi everyone. I'm going to apologize in advance for any rules I've broken. So I really need help with these problems - I am willing to pay for answers to these as well. But I guess with any forum - if you ask for help, you'll have to at least make an attempt as well. These questions are actually from an exam I sat recently (and failed....) I have to resit the exam next Wednesday (may or may not be different) so any help is greatly appreciated. So the questions I'm having problems with are 1, 2, 3, 4, 5, 10 Here are my attempts: 1. IUPAC name - benzyl amine 2. I really don't have a clue with this one - need to do a bit more study. 3. Will need to do …

sucrose doesn't have free anomeric c .it is ok..but it have hydroxyl group..why is that hydroxyl group can't oxidize..

Kinetic Isotopic effects (KIE) Thanks, Shaneo

Ok, Just a question rised in my mind after seeing a few videos on ether cleavages using Hbr or HI. the products of the examples given in videos were often phenols, or basically the ether was symmetric. so they don't answer the question for examples like the attached picture. Which of the following will be the results of this cleavage ? A or B ? (or maybe a C where both products are halides.) thanks for any guide .

Hi everyone Asked is which product will be formed when this molecule reacts with hydrogen iodide: And well... I simply can't answer this question. Conform Markovnikov, I'd say C... But Is the name of the educt really "methyl-cyclobutane-ether"? Is it actually C? If yes, is this due to Markovnikov? Or something else? Thanks! F.

Why bases sucks moisture from the air and melts?