Skip to main content

All Questions

2 votes
1 answer
1k views

What is more reactive towards a cyanohydrin formation an aldehyde or an Ketone?

Which is more reactive—aldehydes or ketones—towards the nucleophilic addition by cyanide to form cyanohydrins?
yayati naresh's user avatar
6 votes
1 answer
278 views

Electrophilicities of carboxylic acid derivatives

I would like to ask about the rate of hydrolysis for 4-hydroxyphenyl acetate (A), N-(4-hydroxyphenyl)acetamide (B), 4-hydroxyphenyl chloroacetate (C), and methyl 4-hydroxybenzoate (D). I know that ...
Joash's user avatar
  • 149
13 votes
1 answer
8k views

Does an acetal give a positive Tollens test?

In Organic Chemistry (Wade) there is a question: Which of the following compounds would give a positive Tollens' test? (Remember that the Tollens' test involves mild basic aqueous conditions.) The ...
user4779's user avatar
  • 687
5 votes
1 answer
3k views

Acid chlorides and reduction by hydrogenation

An acid chloride being reduced through catalytic hydrogenation is an "unobserved" event in the context of our class, according to my professor. Nonetheless, we are expected to predict that the ...
Dissenter's user avatar
  • 19k
28 votes
3 answers
60k views

Rationalising the order of reactivity of carbonyl compounds towards nucleophiles

This is immediately following ron's answer from Why is a ketone more nucleophilic than an ester? One of the most simplest questions you can ask, how can you rationalise the order of reactivity ...
Martin - マーチン's user avatar
18 votes
2 answers
26k views

Why is a ketone more nucleophilic than an ester?

I guess the ester is a weaker nucleophile because it does have an additional oxygen atom, unlike the ketone, that is pulling electrons from the C-O double bond towards the carbon atom (this happens ...
Jori's user avatar
  • 6,233
2 votes
0 answers
290 views

Primary amine versus phosphoramidate reactivity with succinate esters

I have posted two reactions below. The top reaction is well known and occurs readily and near quantitatively (e.g. in protein modification), while the bottom reaction to my knowledge does not exist in ...
BBftw's user avatar
  • 991
22 votes
4 answers
8k views

Why do Organolithium or Grignard reagents act as nucleophiles and not as bases with aldehydes and ketones

I've read entire Chapter 14: Organometallic Compounds of Francis Carey's "Organic Chemistry" but I still didn't get an answer to my question. Quote from the book: Because of their basicity ...
claws's user avatar
  • 963

15 30 50 per page
1
2