conversions

propene to propyne
ethanol to butyne

10 Answers

1
skygirl ·

propene + br2 ----> C-CBr-CBr ----> NaNH2 ----> propyne.

1
skygirl ·

ethanol + SOCl2 ---> C-C-Cl

take two moles...

do Wurtz..

butane will form...

now halogenate...

remove halogen..

double bond forms..

again add Br2...

then remove Br2 with NaNH2...

butyne will form..

1
gagar.iitk ·

@SKYGIRL WITHOUT TAKING TWO MOLES OF ETHYL CHLORIDE BUTANE WILL NOT BE FORMED BY THE WURTZ .........................................................................................
.................. I HAVE A DOUBT

1
skygirl ·

but i took two moles naa ??

1
skygirl ·

btw, wat doubt you have.??

we can expand chain by CN substitution but that will add only one C at a time..

so wurtz reaction is best...

3
iitimcomin ·

ETHANOL....

NOW WE DEHYDEATE TO GET ETHENE....

NOW ADD Br2 or Cl2 watever available [3]

then add NaNH2 .. becomez ethyne.........

now add NaCN .........

ull get

C C- Na+..........

now add ICH2CH3
.......

IT WILL BECOME 1-BUTYNE..........

IF U WANT 2 BUTYNE ADD NaCN as usual and add ICH3 ......

ULL GET PROPYNE .....

NOW ADD NaCN again.....

NOW Na will attach 2 the 1st carbon attom .......

then add ICH3 again ... CH3 will attach itself there ..........

so ull get 2 butyne .......

this way NaCN comes of gr888888 use .......................

wurtz is not dat gud.............

if u wanna go for shorter ways i wud prefer corey house instead of wurtz..........

or i wud prefer organo metallic compounds as well for step up rxns..........

just that i have a grudge against this wurtz guy ........[3]

1
skygirl ·

hehheh [9]

1
skygirl ·

hehheh [9]

62
Lokesh Verma ·

@sky..

what gaurav probably means is that it requires two moleules to collide and not two moles :)

so even if you take 1 mole of the reactant you will get half a mole of the product :)

1
skygirl ·

oh achha... he meant this...

sry i din understnd then...

now did.... thanx :)

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