Organic Chemistry

Help me , please. how to prepare these compose from benzene: 1,4-dibromobenzene 1,4-dinitrobenzene C6H5-CH2NH2 acid m-bromobenzoic 5-phenyl-2-metylphenol merci beaucoup!

I'm starting my med tech major this fall at OSU, and I have a choice between two quarters of O. Chem or two quarters of Molecular Biochem. Could anyone tell me what the differences in difficulty between the two classes are? According to OSU the class descriptions are: Molecular Biochemistry 311: Basic structures and interactions of biomolecules in health and disease. Relevant organic chemistry included. Topics essential to human nutrition, dietetics, clinical chemistry, nursing, premedical education. Organic Chem 251: Structure, nomenclature, physical properties, preparation, and reactions of hydrocarbons, alcohols, and ethers. I can see the diffe…

I have a quick question..I was wondering if anyone could help me understand the thermodynamics behind breathing oxygen? I mean why can't you breathe carbon dioxide? I know that one reason is because the oxygen of carbon dioxide is bonded to the carbon and our lungs therefore cannot bond with the oxygen. But, what's the details behind this? Can anyone help me?

I search a web which contain theory and question, test of stereochemistry (level university). help me, please. Thanks alot Here, i have some questions of stereochemistry. Which is the stable conformation of these composes (substitute: which is axial bond? which is equatorial bond?)

Right, I've studied this for ages but my mind seems to be very slow...I can't figure it out! The set question goes as follows: A reaction between 1-Chloropropane (13.7g) and Sodium Cyanide (10.9g) gave, after purification, butanonitrile (CH3CH2 CH2CN) (6.65g). The first part of the problem is identifying the limiting reagent. This may be a bit long winded, but what I've come up with so far is... 1-Chloropropane = 78.536g mol-1 so 13.7/78.536 = 0.1744 in reaction. Sodium Cyanide = 49.01g mol-1 so 10.9/49.01 = .02224 in reaction. I am fairly sure the 1-Chloropropane is the limiting reagent, but am not certain it is. I'm not sure if the equation is…

Dear All, Apart from KMnO4, can alkaline H2O2 be used to effect oxidation of C=C bond at room temp ? If yes, what are the ideal reaction conditions,catalysts,yields,precautions ? Any journal references ? Thanks in advance, jmarjorie

Would LiAlH4 be a viable reagent for converting methyl propanoate to 1-propanol + methanol? Other possible reagents i can choose from are: NaBH4 Fe/HCL PCC Sn/HCL ....I would think LiALH4 would be the preferred reagent because i read this on the internet "LiAlH4 is a powerful reducing agent which reduces carboxylic acids to primary alcohols in good yields" I know cold dilute sodium bicarbonate could be used for a chemical test to distinguish between benzoic acid and benzamide. Could cold dilute sodium hydroxide be used also? This other question in the textbook has got me stumped too. When treated with sodium iodide, a solution of (S)-2-iodooctane in acet…

is it the case that you cannot conventionally nitrate ferrocene because the Fe is too good of a nucleophile compared to the ring?

Where will bromine be observed in an organic solvent? Varies with different organic solvent with various density? And what kinds of common organic solvent are toxic?

Dear All, This goes out to those expert in fractional distillation : A mixture contains 2 organic liquids (completely miscible with each other), one with a boiling point of 80 deg C and the other with a boiling point of 35 deg C. Can the two liquids be completely seperated by fractional distillation using a very long column or will they behave as a binary azeotropic mixture at constant pressure (constant boiling point mixture) and the distillate still contain proportions of both mixtures ? I'am asking as I have not fully understood the concept; some say the mixtures are not seperable while others say the mixtures are completely seperable; am confused.

I am currently going to synthesize the ester methyl salicylate but I don't know where I can buy methanol locally Is there any chance that a hardware store, pharmacy or any other store may have it? PS: I also made ethyl ethanoate and I was wondering how to separate it from the alcohol and the acid, maybe distillation? Thx

Spray paint features pigments in a solvent. What intermolecular forces are present? If sucrose molecules were submerged in a solution, what intermolecular forces would exist between them? Thanks.

The boiling point of branched hydrocarbons is lower than the boiling point of straight chains hydrocarbons (I am talking about Isomers--> same number of Carbon atoms ) Why is this so? What does that have to do with intermolecular forces?

From my knowlegde: t-butyl alcohol is a tertiary alcohol. It does not react with chromic acid in room temperature ( no reflux). Cr^+6 ions in the chromic acid are red-brown in colour. If reduction occur, the Cr^+6 ions will be reduced to Cr^+3 ions which are green in colour. I have done the above test ( no reflux) using a test tube, what i can observed is two distinct layers with colourless on the upper layer and dark green solution (precipitate?) on the lower layer. Theoretically, t-butyl does not react with chromic acid, but why the colour of Chromic acid changes from red brown to green??

Dear All, Will alkaline / acidic KMnO4 oxidize Ethanol to Ethanoic acid at room temp ? Thanks, jmarjorie

I Have Some Ethylene How Would I Change It In to A Monopolymer Then How Would I Put It Through An Adatoin Reaction To Make Polyethyle Or Way Way To Hard To Do. By the Way If Put A Banana Under Water Will The Ethylene Gas Bubble Up(Over Time) Or Will It Rot?

Would anyone know something about the following pertaining to DBP : 1) Is it pH dependent in its polymerization catalytic activity 2) Ideal temperature for optimum activity in liquid media with Ethanol as solvent (monomer dissolved in solvent) 3) How good will DBP catalyse addition polymerization for the following in Ethanol as solvent : A) Isoprene (2-methyl buta-1,3-diene) C5H8 CH2=C(CH3)CH=CH2 B) Monoterpene (2,6-dimethyl octa-1,7-diene) C10H16 CH2=C(CH3)CH.CH2.CH2C(CH3)CH=CH2 4) Can Benzoyl Peroxide C6H5COOOH also work as well as DBP ? Your kind assistance will be highly appreciated. Thankyou, …

2 choices but which one? Hi everyone! I recently came upon a question in an old textbook I found in school. It asked about the reacion of [ce]HBr[/ce] and [ce]C3H6[/ce]. I know the product of this reaction would be a haloalkane called bromopropane ([ce]C3H7Br[/ce]) but to my question - which would it be: 1-bromopropane or 2-bromopropane? I can find no good definate answer too this so I look to you for advice Also as a little extra why would it form that one an not the other, is there some difference in the structure that makes one more preferable than the other? Note: This is not a homework question its something I found during research and caught my …

i am recently trying to memorize the conditions for reactions to happen...but that takes me a lot of time to do so...do you guys have any suggestions for some easier kinds of revisions?

Dear All, Are saturated hydrocarbon chloro alkanes ( R - Cl ) eg C10 H20 Cl2 ionic ? If yes, are they anionic or cationic ? Can concentrated ammonia solution (0.88) be used to react with chloro alkanes,in a polar solvent, at room temperature (25 deg C) ? It does not matter if salts of Primary,Secondary,Tertiary,Quarternary ammonium compounds are formed. Main purpose of this reaction is to "mop up" the unwanted chloro alkane and seperate it as a salt ie. R - NH3 Cl OR R - NH2.HCl Thanks in advance, jmarjorie

In the direct hydration of Alkenes using an acid ( mineral or organic ) as catalyst in aqueous conditions,what is the ideal Molarity, quantity of acid, reaction conditions and yield ? Is this an efficient process for say, the isoprene derivative, a diene, CH2=C(CH3) CH CH2 CH2 C(CH3)CH=CH2 , which is soluble in Ethanol and using dil H2SO4.

Can the Alkene, C10H16, a derivative of isoprene, a diene : CH2=C(CH3)CH CH2 CH2 C(CH3) CH=CH2 undergo free radicle addition polymerization using Di benzoyl Peroxide at room or elevated temperature, but atmospheric pressure ? Solvent is Ethanol.

Cationic polymers are high POSITIVE charged molecules. Alkenes have a high density of NEGATIVE electron charge associated with the pi electrons of the double bond ( C=C ) Can the two react together ( coagulate / agglutinate ) ? The Alkene is a diene,C10H16, a derivative of isoprene CH2=C(CH3)CHCH2CH2C(CH3)CH=CH2 The Cationic polymer is Poly Diallyl Dimethyl ammonium Chloride, poly DADMAC, having a medium molecular weight and high charge density.

I need to express blood pressure in terms of kPa. The conversion is 1kPa - 7.5mmHg, or .133 kPa - 1mmHg, but how would this be expressed? Just kPa subsituting mmHg, ie kPa/kPa?

I have just been reading a text book that talks about the discovery of Buckminsterfullerene, and how research is on the way to incorporate molecules into the strucure. As the text is so old I would guess it has already been achieved but I can't find any info on the net, any of you know if this has been done yet?