Organic chemistry Definition and 251 Threads

The question in the summary refers to While I am here, I might as well be hanged for a sheep as for a lamb, so another question that will reveal the fact that I am relatively new to organic chemistry nomenclature refers to the following diagram: Why is one hydroxide given priority over the...

The answer is that the 2nd, 3rd and 6th compounds can undergo Friedel-Crafts alkylation. I don't understand why the 4th compound cannot undergo a Friedel-Crafts alkylation reaction, but the 2nd compound can. It has an activating NH2 group and a weakly deactivating Br group, and it's similar to...

Here are 2 options: A) B) For both syntheses, a protecting group is added to the alcohol, the ester is hydrolyzed to a carboxylic acid, then it is turned into an acid chloride using SOCl2. The difference is that A is base-catalyzed and B is acid-catalyzed. The correct answer is A, but I...

In this question, I am not sure as to which of the following two chains should be considered as the principal chain. Approach 1 (7 carbon chain, 2 substituents): 4-methyl-4-(1,1-dimethylethyl)heptane Approach 2 (6 carbon chain, 4 substituents): 2,2,3-trimethyl-3-propylhexane Clearly, the...

This question has me puzzled, I can't seem to solve it. Or where to start?

I've figured out that both compounds have 4 unsaturations. The fact that they are insoluble in water makes me think they might have a benzene ring. When bromine water is added (I found out online that it's Br2 in water), perhaps some hydrogens from the benzene ring might be replaced. However...

I’m starting my PhD in Organic Chemistry this Fall. I want to review all of undergraduate Organic Chemistry and I’m trying to develop a plan of attack. I did alright in lectures but not perfectly and did quite well in labs. I don’t want to be bombarded in grad school and want to have a proper...

Summary: What’s the best way to review inorganic chem in preparation for OC. Assume zero recall on basic college chem. Are there study guides, online courses, etc. for this specific purpose?

Hello there, My attempted explanation/solution is : “Torsional strain is caused by the tendency of the electron clouds in the interacting groups to repel each other, making it relatively difficult to rotate a group towards and through another group, as the repulsive force provides resistance to...

The molecule is p-phenetidine

Hello , I am studying lipids and a point got me confused . it is said that beside the fatty acid we have glycerol and sphingosine that forms the backbone of the lipid . is the lipid formed by those 3 components at the same time (fatty acid +glycerol +sphingosine ) or it is formed by the fatty...

Are all non aromatic carbon chain aliphatic ?

Alkanes list Can the Alkanes list be further compiled after decane with formulas ? Is it advisable to mix Alkanes ? Examples : Propane + Nonane = ? Butane + Pentane = ? Decane + Methane = ? Propane + Hexane + Decane = ?

We studied in chemistry that the concept of oxidation and reduction is the exchange of electrons between two chemical substance ,but when i started to study organic chemistry i saw that when we talk about for example the oxidation of a compound it can loss atoms and change his constitution...

My answer is coming a & c but given ans is a, b & c in my textbook. Plz can someone give mechanism for this reaction? Because my teacher only told that 2° and 1° Amines give the test. So answer should be a & c na but it's wrong :(

I was thinking to react Aniline with Br2 in presence of Ch3ch2-Oh But I don't know the mechanism also I'm confuse will this really give the desired product In my textbook, they reacted aniline first with an aldehyde and then with bromine water, and then with H+ to get Desired product .. I want...

When there is both alkyl substituent and ethoxy substituent in a single molecule, which one should be prioritized when numbering your base carbon chains? I am confused because the first structure below seems to have numbered the carbon attached to ethyl as the first carbon, while the second...

I tried drawing the structure, and I do not know which one of the two is the correct compound for the nomenclature. Which one would be the correct one, and why? Thank you!

I can only view each carbon individually so I don't see why the representations under incorrect is incorrect.

How would I name the following two compounds? My guess is that the first one would be 3-bromophenyl 1-chloro ketone and the second one (4Z)-3-sec butyl-hex-4-en-1-yne. Am I correct? Thank you

The following structure was given, and I have to name the compound. My guess is that the compound is called 3-bromo phenyl chloro ketone, but I am not sure. Can you tell me if my answer is correct, and also tell me how to tackle the IUPAC naming for this compound? Thank you!

The following structure was given, and the answer was (z)-1-bromo-2-chloro-2-fluoro-1-iodoethene. But how do you decide which carbon is numbered 1 and the other 2? Thank you.

... with the intention of going into novel drug synthesis. It might be a bit of a reach to ask this on a physics forum, but I see chemists among us, so I guess this is as good as any. To those of you with experience in the field, what makes a good organic chemist? What makes a good medicinal...

I thought that the compound would be named 2-bromo-propan-1-ol, but the answer sheet says that it is 3-bromopropanol. But don't you have to indicate the position of the OH group with carbon numbers? My textbook says that CH3CH2CH2OH would be named 1-propanol. Here, it seems like the position of...

I understand the first one, which indicates that there is a phenyl group in the second carbon of pentane. But where did the 2 in 2-pentylbenzene come from? Shouldn't if it be just pentylbenzene, since there is only one subtitute(pentane) on the benzene? If not, would you explain why? Thank you.

The picture above is the correct answer, but I do not understand why. I thought that the OH group on the top has to be prioritized and be numbered 1. But then, the structure would have to be named 2,4,6-trimethylphenol, not 1,3,5-trimethylphenol. For example, 4-chloroaniline structure looks...

For organic chemistry, what is important to memorize when I am reading a textbook? Should I memorize the structures and names of different organic compounds when they are described as examples? Or is it more important to memorize the organic reactions? Also, does anyone have any tips on how to...

The question: How will the first reaction take place for instance? Is CH3S- the nucleophile? Will it be added to the oxygen and the other hydrogen(H+) get attached to the other oxygen, with the double bond shifting to the center(C2-C3)? If this is right then where will CN- will attack?

Summary:: I'm always unable to find the products of a chemical reaction. No Matter how much concept I study I can't ever get products from reasoning. Here is the question: What is the major product of this reaction? . OPTIONS : MY ATTEMPT : First of all I can see that in...

Hello All, I have attached my questions with pictures in attached photos. Look at screen shot 46 first then screen shot 47. I am having trouble ranking acidic protons. In my Organic book it has the order of: 1)Charge 2)Atom Type 3)Hybridization 4)Resonance 5)Induction Things I know: S is able...

Hello! There is a problem to write chemical reactions that goes with substances if they are not stored properly. For example theophylline should be saved from light and though I am trying to find its’ reaction with hv(light) but failed. Please help with some good reference Many thanks in advance

I think that the double bond would be broken in some way but what happens to the two bromines? do they remain in the ring? (or does HBr forms? is it possible?)

Hi, I am a retired Organic Chemist. I was looking around for the answer to a trig question and found this site. It looks interesting so I signed up. I am also an amateur astronomer, and have an interest in arduinos and raspberry pis as well as other computers. I mainly use linux and my...

What does it mean and why do acetophenone and acetic acid have it in their name ?

I was wondering if I should retake this course for a better grade. I got numerous responses from the colleges I am interested in for grad school. Probably will be taking Advanced Organic Chemistry as an advanced elective. If they have other courses that are offered like instrumental analysis I...

What is the best possible way to learn all the reactions in organic chemistry, where should one start, what are the fundamental topics to be covered and remembered all throughout for building up a great strong base in this part of chemistry?

I am wondering if anybody knows how to calculate the theoretical relative permittivity of a molecule (1) using the theoretical configuration and values that are easily accessible (2). I am also wondering what the technique would be. In my pharmaceutical reaction class and also O-chem 2 we have...

Homework Statement Homework EquationsThe Attempt at a Solution C=C double bonds means that it is not an Alkane because an Alkane is saturated hydrocarbon. So the answer should be from A, B or C.

I used sailcylic acid and acetic anhydride to produce aspirin and preformed recrystalisation to purify the aspirin. I need to evaluate why I have a higher/lower melting point. In this case, the melting point was 143°C whereas the true meling point is 135°C. I thought one of the reasons my...

After carrying out reflux and distillation to produce ethyl ethanoate (ethyl acetate) I measured the boiling point and I got 71 degrees Celsius whereas the true value is 77.1 degrees Celsius. Impurities increase the Boiling point (BP) as well as concentration. However my calculates BP is lower...

Hey guys, should the -OH group in glycolic acid be considered a functional group or a substituent due to the presence of the carboxylic acid group?

Homework Statement See attached file Homework Equations N/A The Attempt at a Solution a) 1,1,2-tribromo-1-propene Now this one I'm not sure about. Is the CH3 a methyl group attached to ethene? How can I consistently tell the main hydrocarbon chain in a diagram like this? b)...

Can anyone help me with this ? What does the arrow mean ? Is it cis or trans,the base is small so it should be an E2 elimination with zaitsev product.Though I think it may be due to the beta hydrogen being unavailable,but I do not know whether the arrow means from the upper or lower /cis trans...

I'm having difficulties figuring out where the new carbon-carbon bond would form. Any help is greatly appreciated. Thank you!

Homework Statement What product(s) does this reaction produce: Acetone + diethylamine Homework EquationsThe Attempt at a Solution That is what I got, but the answer is N,N-dimethylethanamide. Can someone please explain why?

Homework Statement What is the product of this reaction: p-methylbenzyn + 1,3-butadien? Homework Equations C6H4CH3 + C4H6 The Attempt at a Solution a bicyclic ring is formed?

I would like to clarify this particular question. According to the answer key, the answer is D. However, I argued to my friend that there may be an error in this question. The arrow is pointing toward a carbon atom so the question might have been " The indicated carbon atom is:". But if...

Is the crossed aldol condensation of acetone and ethyl methyl ketone possible?

<Moderator's note: Moved from a technical forum and thus no template.> OChem Question: My Answer: Not sure if this is correct. Anyone?