Organic Definition and 432 Threads

Hi When naming organic compounds, hydrocarbons for example, it's very common to have several radicals of the same group attached to the 'main' carbon line. So for example, pentane, with 5 carbons in a row. Suppose we add 2 methyl to it, one on carbon 2 and one or carbon 3. We'd then have to...

Organic Chemistry! Ok so I've been looking absolutely everywhere and cannot find an example to go by ANYWHERE... how in the world does a mechanism work for the synthesis using the catalyst potassium tert-butoxide?? The reactant is 2-bromo-3-methyl-butyl-4-benzene. Any hints at all would be...

Homework Statement Use a flow chart to distinguish between: 1-hexene, cyclohexanol, 1-bromobutane, 1-propanol, 2-hexene, 1-hexyne, 2-bromopentane, 3-methyl-3-hexanol, 3-bromo-3-methylhexane by using a positive and negative test by adding other compoundsHomework Equations N/AThe Attempt at a...

I'm only a high school junior, but I am debating on whether to take AP Chemistry in senior year or wait till the first/second year of college (it's required either way). However, I have a pretty odd situation since I took pre-AP Chemistry over the summer (not my own school's) and everyone...

What is the difference between biochemistry and organic chemistry?

Hi everyone, I was wondering if someone could please explain to me the concept of waveguiding, coupling/coupled, and guiding mode. Here is an application of these terms: The photons emitted in the active region of OLEDs are coupled into three types of modes: direct transmission into...

Hello, Is there any mistake ? http://img216.imageshack.us/img216/7462/90558873jn1.png

this isn't exactly an specific question but a general one. I know that weak bases make good nucleophiles but how do I determine what bases are the weakest, what is weak enough to be considered a "good nucleophile" I'm a little confused please help thanks a lot!

Homework Statement Find the major organic product B of http://www.webassign.net/userimages/kasandbe/CH221_ssii_02/CH221_exam2_ssii_02_7a.gif (with ethanol at 0 degrees Celsius) Homework Equations The Attempt at a Solution I thought that since it is a SN1 reaction the -OTs would...

Homework Statement Which isomer is more basic in the following pairs: o-methyl aniline or p-methyl aniline o-chloro aniline or p - chloro aniline o - chloro aniline or o-floro aniline o-nitro aniline or p-nitro aniline

Homework Statement This is a problem based off of the article published in Science about MIT's organic solar concentrators. The arrangement that I'm dealing with is a dye layer in a glass window, with the solar cells on the side of the window. The absorption re-emission efficiency of dye...

Organic Chemistry question! How do you write a balanced chemical equation for the reaction that can occur between p-toluidine and hydrochloric acid?? and is benzoic acid a polar or non-polar molecule overall??

I was wondering does bromide react with propanol or propanal at all? Also, what answers do people get for this question, i say it either propanol or propanal as i don't know if either reacts with bromide and both would be a suitable answer. The question is: Compound A has a molar mass...

I was wondering does bromide react with propanol or propanal at all? Also, what answers do people get for this question, i say it either propanol or propanal as i don't know if either reacts with bromide and both would be a suitable answer. The question is: Compound A has a molar mass...

Homework Statement Part of a long question: suggest the type of reaction occurring: (C6H5)3C-NH-CH(CH3)-CO-NHCH2COOH -----> (C6H5)3C-H + NH2-CH(CH3)-CO-NHCH2COOH The Attempt at a Solution what i got in mind is that it could a free radical substitution reaction?! using H2...

Homework Statement I'm trying to determine whether the arrowed nitrogen is acidic or basic. Apparently the answer is that it is acidic. I don't really understand how I am suppose to make that call. That nitrogen is part of secondary amine that is basic, with resonance effect from the oxygen...

I am confused with how these reaction occurs. I don't know the polarity of compunds like NaHCO3, Amyl acetate, Benzoic Acid, Phenol, and EthylamineOrganic Sample with 1M HC with 1M NaOH with NaHCO3 Amyl acetate insoluble insoluble X Cyclohexane...

Homework Statement Name the following compound: CH3CH2C(CH3)2CH(CH2CH3)CH2CH2CH3 It's an alkane (Is there a way to see that it's an alkane when it's in this format?) Homework Equations The Attempt at a Solution I really have no idea where to start. I can name compounds...

Homework Statement 1)(CH_3)_3CCH(OH)CH_3+ HBr -> I believe reaction should be elimination because Br^ - is a weaker nucleophile than OH^ - so it cannot substitute it. 2)CH_3CH_2CHBrCH_3 + EtO^ --> Substitution? 3) Compare the nucleophilicity ofNH_3 and PH_3 NH_3 has more e^ - density so...

Hi, I was looking around at graduate schools and was curious if anyone knew of places where they are doing research into organic electronics or organic photovoltaics? I found a research department at MIT and Stanford, but I was looking for something perhaps one tier below that. It...

CH3CH2CH2CH2OH A benzene ring with an OH group attached on the top and a NO2 group attached at the bottom. A benzene ring with an OH group attached on the top and a CH3 group attached at the bottom. A benzene ring with an OH group attached on the top And my question is, how...

Hi, This is probably a really easy question, but I need help in finding the answers to it. Let's say I have a some raw chemical A (example: water) and I want to make it into a chemical B (example: something with an -OH). However, I don't want to use any chemical means but do everything via...

Homework Statement Two protons have different pKas: 3.50 and 4.25. The molecule is 2-bromo-3-nitrophthalic acid (if I'm naming it correctly). Assign the correct pKa to each proton. http://uploader.ws/upload/200805/pkablank.jpgHomework Equations A lower pKa means a stronger acid, which means...

We all know that hydroxide will never be a leaving group in an SN2 reaction, no matter how strong the nucleophile. Yet an intermediate containing R-O- is created when a nucleophile adds to a carbonyl compound. It looks sort of like a leaving group, but it's still attatched to the molecule...

We've been doing syntheses for a little bit in class and I just can't get these. I'm having trouble taking the final compound and figuring out how to synthesize it from the starting compound(s). I feel like I'm better using reverse synthesis but I'm still getting stumped on that. I just can't...

Hello I am taking organic chemistry I and II this summer and our required text is by Solomons, is there a nice book that you guys recommend to replace/supplement this text? I am a math student and it appears that the orgo books follow the same trend as calculus books (Stewart, Larson, etc..)...

Homework Statement Why doesn't CH3CH2OH (alcohol) conduct electricity but CH3COOH does? Homework Equations The Attempt at a Solution I did some research on the website( answers.yahoo.com/question/index?qid=20080411203909AAqYaN1). It mentions about the difference of bonding...

Homework Statement Salbutamol is as shown below. (i managed the display off google which is similar to that of the book) http://upload.wikimedia.org/wikipedia/commons/thumb/f/f1/Salbutamol-2D-skeletal.png/800px-Salbutamol-2D-skeletal.png" except for the cyclic ring is a benzene ring...

Homework Statement Which of the substances below is least soluable in water? A. CH2OHCHOHCH2OH B. CH3COCH3 C. CH3CH2COOH D. CH3COOCH3 Homework Equations The Attempt at a Solution I think bith B and C are not possible since B can dissolve in water easily and C is acid...

anyone here is good at organic spectroscopy ?? I really need help with NMR spec > < thanks a lot !

Homework Statement please check PDF Homework Equations none The Attempt at a Solution I have no idea how to attempt this problem set. The instructor had this insane idea that if he gave us questions that we've never seen/dealt with before that he'd be doing a better job...

Organic element symbol "R" I keep hearing different things about what exactly the letter R represents in organic chemical structures. Does the R always represent an alkyl group or can it represent groups with heteroatoms? For example...

I'm a bit confused about what alkyl groups are in organic chemistry. I thought functional groups by definition where groups of atoms which contained at least 1 element other than carbon or hydrogen which were connected to the carbon skeleton of the molecule. What are alkyl groups then? I read...

If a person drank methanol, they would go blind, and their breathalyser analysis (in units of mg/100 mL blood) would be in error. Its reading would be?

I have a lab question that I'm stuck on. For your assigned molecule evaluate the energy barrriers to the rotation: from anti to gauche from gauche to gauche from gauche to anti I have data/graph of steric energy vs. dihedral angle of 1-chloropropane, but I don't know how to use...

I was working on my chem lab, this question occurred to me. Water and dichloromethane are both polar molecule. However, dichloromethane is able to mix with alcohols much better than water. Is there a polarity difference that caused the miscibility to be different?

I just learned octane numbers in organic chemistry a few days ago, and I'm extremely confused about it. From what I understand, the octane number indicates resistance of a motor fuel to knock, and "knock" is the tendency for the fuel to detonate before hit by spark. Is there an easier way to...

Homework Statement Are these two structures resonance? if not why not? Homework Equations The Attempt at a Solution I drew these resonance forms myself, but the answer book didnt' have this resonance structure in its answer and i wanted to know if this indeed is a...

[SOLVED] Organic Chemistry Which about benzene is true? 1. It has alternating single bonds and double bonds. 2. All C-C bonds are of the same length. 3. It is more stable than a hypothetical cyclohexatriene. 4 1 and 3 5. 2 and 3 I said 5, but it also has alternating...

[SOLVED] Organic Chem - Resonance Structures #2 Homework Statement Trying to figure out this resonance structure...Draw the lowest energy alternative.. http://img162.imageshack.us/my.php?image=553562cu7.jpg The Attempt at a Solution ive been trying to move the upper double bond...

Hi everyone (me again), I am currently in my first year Chemistry course, s its really general in the sense that we are covering broadly about every topic in Chemistry (except for the specialized ones). Now we just started organic chemistry and I noticed not a lot of math is involved, so I...

Does anyone know any good websites to find some challenging organic chemistry questions?

http://img176.imagevenue.com/img.php?image=24632_help-please_122_195lo.JPG" How is the hybridization on B (a nitrogen atom - refer to pic) sp3? I only see 2 bonds? how else can i complete an octet? Could someone explain the answers to me please..i have a day remaining before my exam..im...

i really liked Gen. Chem b/c it involved calculations and i miss that, what's the next Chem course I can take that is heavy in Math in Chem? also, i understand and know most of the things that is expected from a 1st yr Organic student, it's just not that appealing to me.

The question/direction is to: "Draw the structure of the following compound!" 2-methyl-4-(1-methylethyl)octane I tired several different ways of constructing this compound but the online homework program ACE Organic says that: I don't know what to do or what I am missing. If anyone can...

I feel like everyone is at the organic party but me :( I just finished my first organic chemistry exam and I'm so frustrated. I really enjoy it up until the test. Anyways, I've been confused about acid and base molecules since chem1 and chem2. Never really got it. How can I determine that one...

Hi. In my chemistry book, one of the questions was to name the given organic molecule. What was given was a benzene ring with a single -OH functional group attached. Immediately, i recognized it as phenol, but i also said its conventional name was benzenol. When i turned to the answers...

Hi everyone, I bought the book online, so now I'm waiting for its delivering. But I have to submit the homework assignments for credit. Could anybody who have the Organic Chemistry of Bruice 5th edition, please post the question of these problems for me? Thank you soooooooooooooo much ...

to whom may read this, i was desperately looking for a chemistry computer program which allows me to draw organic molecules, methane, trans-1,2-dichloroethene, cyclopentene, etc. with the bonds in them. Here is an example of what i would like the program to draw...

Hello, I need to make sure I understand some of the reactions correctly... For example: CH2OHCH3 in H+ will give us CH2=CH2. I would think that here the H+ bonded with the OH resulting in H2O (a leaving group), but I am not sure what happens to the other leaving H. In RC≡CR' in Na/NH3...