Organic Chemistry

Hello, I have imagined and drawn two molecules of TRIPLE Helix DNA Bases (image)... ( In the image the backbones of the three sugar/phospate Helices is NOT shown...) There has to be only ONE possible way to connect the 6 DOUBLE-Bases into two separate triplets... Can anyone who knows Organic-Chemistry tell me if I have made any MISTASKES by my design???... IF my molecules fullfiles aromatic criteria???...

Hi, I am a first year Chemistry Student and I am looking for any good books to read in English. Since English is not my first language i would really like to learn and improve my knowledge of English in my field of science. Do you know any good books i could read? Thanks for your suggestions!

Fellow companions, I am following the rules of charge, atoms, resonance, inductive effects, and orbitals. For (c) I do not understand why molecule 1 is ranked first. I would have thought molecule 3 would be the most acidic because of atoms and the ortho arrangement. Please enlighten me as soon as possible. Why would the first molecule win? Anyways, that is what the answer key says.

Assistance needed

I have these three compounds with a Fluorine attached to different carbons. If you look at the chromatograph, two of the Fluorine peaks (the 213) are relatively the same size, however one of the compounds the fluorine does not come off as readily (3-fluoro-AMB). I've been researching on why this is occuring for that compound. Can anyone lead me in the right direction?

What is the product for the following reaction? 2-bromo-3-methylbutane and HCN (This is not homework. I just want to know how the above reaction is different from NaCN which yields SN2 2-cyano-3-methylbutane.)

Hi, I would like to ask whether anyone has expertise on the topic of antacids and side-effects. I was wondering what would happen if you take magnesium-based antacids and aluminium-based antacids at the same time. Would there be a clash in side-effects of diarrhoea and constipation or whichever is higher in content? What happens if they're the same content and orally taken. Regards,

Hi, maybe somebody know, does prochloraz (imidazole fungicide) react with isocyanates, acid chloride, acid anhydride, alcohol and amine ? Thank you for your time.

Hi,I don't know the educts for this synthesis. Could anyone please help me. I would be very grateful. In the first picture I wrote down my task and in the second picture I solved the part, I was able too solve.

Does anyone know how to synthesize this chemical? Chemical 1.mol

Please can someone help me out with this.Can someone explain me how will the reactions take place. Thank You

Dear All, How can a mixture of Ethanol and Pyridine be efficiently and totally seperated from the same mix by fractional distillation, which practically yields a constant boiling point mixture of 75 deg Centigrade. Can both chemical & physical methods be deployed simultaneously ? eg Can the Pyridine be chemically reacted to form a compound having a much higher boiling point (say with dil HCL, to form Pyridine.HCL ?) or was the distillation temp too high, so that both compounds just distilled over ? The fractionating column had steel helices and was long enough. Any suggestions ? Thanks in advance.

Hello, beautiful people, I am presently comparing the melting points and the boiling points of a series of cycloalkanes and their isomers. Attached (below) are the figures representing two graphs: 1) Comparison of melting points between a series of cycloalkanes and their isomers; 2) Comparison of boiling points between a series of cycloalkanes and their isomers. The x-axis represents the number of carbon atoms on the molecule whereas the y-axis represents the temperature (m.p. or b.p.) in degrees Celsius. I have observed from the graphs that the temperature (m.p. and b.p.) of the isomer series tend to be lower than the series of cycloalkanes. Also, the…

Can someone please provide me with the complete details of the chemical synthesis of lampda cyhalothrin, using chemicals that can be easily manufactured or bought from the market.

Hello, Could any one suggest me how to synthesize diastereomer using amino acids (D-Tryptothan/D-Lysine/D-Glutamic acid) and chiral alcohol so that enantiomer excess can be calculated? Which is suitable chiral alcohol for the reaction? Thanks

Are there any organic molecules that display red phosphorescence in aqueous solution? Their conjugation with an antibody targetted to cancer cells may sufficiently expose the photosensitizing agents to red light deep within the body thus producing singlet oxygen for killing of the cells.

Guys help if it is possible of course, in more detail tell about the reactions specified on the picture? It phenelzine Also I will be glad if someone gives the (as much as possible detailed if are) methods of synthesis of this substance, can be at someone there is such information. Thanks in advance! s11.radikal.ru/i183/1705/70/70125f7e3f5f.jpg Here I have still found the picture on this subject, to see a similar way of synthesis. http://radikal.ru/lfp/s019.radikal.ru/i617/1705/b0/d2a328b425b2.jpg/htm And it is the 2nd way which I have found in the Internet Fenelzin — 2-feniletilgidrazin (7.2.1) receive interaction of a 2-feniletilbromid with a hydrazine [42, 43,…

Can anyone tell me why prions have 2 stable conformations?

Hi, According to the USP <643> I need to prepare a solution of 0.75 mg/mL of 1,4-Benzoquinone USP Reference Standard in order to get 0.5 mg/L or carbon (500 ppb). Could anyone please explain how the calculation is done? How do I know that I have to weigh in 0.75 mg of Benzoquinone and dilute in 1L of Water in order to get 500 ppb of carbon content? Thanks for your help!

Hey everyone basically this is going to be a thread devoted to cataloguing as many smells for organic compounds as possible, to compile a definitive list. The human olfactory system is incredibly powerful, but it is difficult to put your chemoreceptors to good use without knowing what the various scents represent. Allow me to start: Butanal: Rancid butter Octanal: Citrus (oranges) Nonanal: Roses Sorry these aren't more ordered, they're just off the top of my head at the moment. Smell with caution!

With the galloping demand for energy. Is it possible we synthesis a novel biofuel from cellulose apart from the known ethanol. What about the possibility of genetically culturing an enzyme that can help convert cellulose to an energy containing compounds that can serve as biofuel? Lignin, cellulose and hemicellulose are so abundant but we cannot maximize them. Present means of converting them to glucose is not economical enough for their commercial success. Can we brainstorm on this?

i have got these bond energies: Butanol 5580 (total) Water 928 Carbon Dioxide 1210 oxygen 498.3 When i work out the total bond energies on both sides, it shows me that the complete combustion of Butanol is ENDOTHERMIC!!!! Whats wrong with my calculation C4H9OH + 6O2 ----------> 4CO2 + 5H2O 14149.8 11080 See?

Is anyone using HypNMR?

I have done a Wittig reaction from cinnamaldehyde and Benzyl triphenyl phosphonium to obtain diphénylbutadiène (i might be using the french notation i have joined the reaction) and i am supposed to obtain a mix of trans-cis and trans-trans product, but while drawing them, i found 2 molecule each that would fit the description. my question is: is it true that only the top 2 (in the drawing) are found , and how can i distinguish the 1st & 4th and the 2nd & 3rd. I also added the mechanism which i drew, i find the 4th one to come more naturally, but the proffessor said his source found it to almost only give trans-trans product (edit) well i think there may be ro…

So I was doing research online and saw that when you make home-made perfumes and cologne, once mixing the essential oils with the alcohol or oils before you use the scent it should sit for 2 weeks to a month before using it. The question I can't find an answer to was what exactly is happening in this period of time where the compound is steeping, and is there anything that can be done to speed it up (different base compound, temperatures, agitation, diffusing etc.)?