Question

Organic help @abbot

Answer 1

Of the five isomeric hexanes,the isomer that can produce 2 monochlorinated products is?

Answer 2

Well what are the five possible isomeric hexanes, do you know?

Answer 3

I can try

Answer 4

theres hexane, 2,2-dimethylbutane...

Answer 5

2,3-dimethylbutane...

Answer 6

do you remember what we dicussed yday? :)

Answer 7

Yep :)

Answer 8

so we need only 2 diff H atoms here.

Answer 9

So, which ones can we rule out? Let me draw them out 4 u, it might help

Answer 10

Uh, is that a circle? Lol

Answer 11

I meant a tick mark.

Answer 12

Oh. Well, that one is correct. haha.

Answer 13

Yey :)

Answer 14

2. The compund formed as a result of oxidation of ethyl benzene by KMnO4 is:

Answer 15

carboxylic acid.

Answer 16

How to figure that out?

Answer 17

you mean, ethylene benzene??

Answer 18

I mean how u got Carboxylic acid? It is not there in options lol

Answer 19

oh wait its there my bad :/

Answer 20

so how u get carboxylic acid?

Answer 21

I don't remember the detailed mechanism, but generally KMnO\(_4 \) and K\(_2\)Cr\(_2\)O\(_7\) in an acid, oxidize aromatic alkyl groups to carboxylic groups or ketones.

Answer 22

But for safety purposes, potassium permanganate is used since it is safer than potassium dichromate

Answer 23

so why acid here and not ketone?

Answer 24

I really don't think that for intro to organic, you need to know the details of it's mechanism.

Answer 25

so why acid here and not ketone?

Answer 26

well, this is also a radical reaction. so, you want to form the more stable product, and it is more stable at the C2 than it would be at the C1 methyl.

Answer 27

if you are REALLY interested in the mechanism or detailed explanation of this, you can look in a advance o-chem book, or graduate level textbook.

Answer 28

oh ok :)

Answer 29

for practical purposes, it generally cleaves the CH\(_2\) group adjacent to the benzene.

Answer 30

also, note that you need a free hydrogen, since remember, this is a radical rxn.

Answer 31

3. Toluene is nitrated and the resulting product is reduced with tin and HCl. The
product so obtained is diazotised and then heated with cuprous bromide. Reaction mixture so formed contains?

Answer 32

Have you learned about ortho, meta, para?

Answer 33

activating and deactivating groups.

Answer 34

Yes.