Chemistry Reaxns, conditions

[Meshuggah]

Lets make a list of the organic reactions with the condition people.
I always get confused int the difference between conditions for esterification.
Heres one,
CH4 + Br2 ----UV + heat ----> CH3Br + HBr

 

[beacon_of_light]

Lets make a list of the organic reactions with the condition people.
I always get confused int the difference between conditions for esterification.
Heres one,
CH4 + Br2 ----UV + heat ----> CH3Br + HBr

btw thats not an esterification reaction. that is free radical substitution reaction. Do you want the mechanism for that reaction?

 

[beacon_of_light]

well the conditions for an esterification reaction are: conc sulphuric acid as a catalyst and heat.

 

[ghetto-queen]

if you get confused with esterification then just consider it as a condensation reaction, where a corboxylic acid and alcohol join to make an ester and release a water molecule.
the acid releases the H+ ion while the alcohol releases the OH- ion.
and the example you gave is no where near esterification.

 

[Meshuggah]

No, that is not a esterification reaxn. I meant sth else.
Anyways I wanted to know the reacn conditions for these two:
Halogenation of Alcohol &
Hydrolysis of Halo-alkane

 

[ghetto-queen]

then what was is that you meant?

anywyas, for hydrolysis of halo alkane, its a reaction with NAOH(aq) or KOH(aq) and also results in the formation of an alcohol.
it goes like this,
CH3CH2BR + NAOH(aq) ---- reflux ---> CH3CH2OH + NABR
or
CH3CH(cl)CH2CH(cl)CH3 + KOH(aq) ---- reflux --> CH3CH(OH)CH3CH(OH)CH3 + HCL

 

[ghetto-queen]

and for a reaction of alcohols with halogen acids (e.g. HCL, HBR, HI)
you use ZnCl2 as a catalyst.

(CH3)2 CH CH (OH) CH3 + HCL ---- ZnCl2 + reflux ---> (CH3)2 CH CH (Cl) CH3 + H20

 

[beacon_of_light]

No, that is not a esterification reaxn. I meant sth else.
Anyways I wanted to know the reacn conditions for these two:
Halogenation of Alcohol &
Hydrolysis of Halo-alkane

for halogenation of alcohols,
to prepare chloroalkanes...alcohol+PCl5/PCl3/SOCl2...the best method is with SOCl2 as SO2 and HCl produced escapes leaving behind the desired product.

to prepare bromoalkanes...alcohol+NaBr+H2SO4...HBr will react with alcohol to produce bromoalkane...PBr3 can also be used...

to prepare iodoalkanes....alcohol + PI3...

All reactions require heat except alcohol + PCl5...it occurs at room temperature...

For hydrolysis,
Add NaOH(aq) and heat...

 

[intel1993]

@becon of light.............
just list out the reactions in which reflux required.....???

 

[beacon_of_light]

whereever the word nitrile comes....don't forget to write reflux...Hydrolysis reactions also require heat under reflux!

 

[beacon_of_light]

Hydrolysis of esters*

 

[Coca]

i am a dead meat..!! i don't get what esterification is..

 

[intel1993]

esterification:

it is the reaction of acid and alcohol to produce a product called ester and water(eliminated)..........in the predence of Concentrated H2sO4(sulphuric acid) used as catlayst

in this reactIon OH ion is removed from acid and H+ is removed from alcohol.....

for eg:

acid= ch3cOOH (ethanoic acid)

alcohol= C2H5OH (ethanol)

now reaction

ch3cOOH + C2H5OH = ch3cO(OC2h5) + H20

(the bracket part is the part from alcohol which left after losing H+, i used the bracket for ur convinence bt in answer write it without bracket)

so the keypoint of the reaction is remove Oh frm acid and H from alcohol......and the thing which left is the ester,.........that h and Oh made the water