become expert | help | login
refer a friend - earn nickels!!
 advanced

  Ask & Discuss Questions with Community & Experts

 Moderation Team
  500 chars left
Ask community Community Discussion Question: want to know the conversion of Ethanol to but-2-yne in simple steps .. ?????
Reply Forum Index -> Organic Chemistry originally posted here on IIT-JEE / AIEEE community   
Email  
Author Message
[Post New] 5 Oct 2011 18:14:13 IST
   Subject: want to know the conversion of Ethanol to but-2-yne in simple steps .. ?????
[Up] View Post
alok vats (60)

Olaaa!! Perrrfect answer. 12  [12 rates]
alok vats's Avatar
total posts: 178    
Offline

can u tell me guyzz ..how to do this ???

 Ethanol ----------> But-2-yne  .... !!! 

 steps should be simple ..Thankzzz 
A CooL $aggI having +ve outlook on life,full of Enterprise,Energy,Versatility, Adventurousness & Eagerness to extend Xperience.
Basically Ambitious & Optimistic, & continue to be so even when the hopes are dashed.

Optimistic and freedom-loving
Jovial and good-humored
Honest and straightforward
Intellectual and philosophical.....



Rulin' Your Hearts ;-)
    
[Post New] 5 Oct 2011 21:02:46 IST
   Subject: want to know the conversion of Ethanol to but-2-yne in simple steps .. ?????
[Up] View Post
Madhusudan Chavan (3238)

Forum Expert

Olaaa!! Perrrfect answer. 564  [773 rates]
Madhusudan Chavan's Avatar
total posts: 2554    
Offline

The  conversion can be carriedout by following steps:

1) Ethanol to iodoform by reaction with NaOH + Iodine

2) Iodoform to acetylene by reaction with metallic silver

3) Acetylene to disodium acetylide by reaction with sodium metal

4) Disodium acetylide on reaction with two moles of methyl bromide will give But-2-yne.

CH3CH2OH ......>CHI3 .......> HC triple bond CH ..........>NaC triple bond CNa ........>CH3-C triple bond C-CH3
  this reply:   0 points  (with 0  Olaaa!! Perrrfect answer.   in 0   votes   )     [?]
 
You have to be logged on to rate
  
[Post New] 6 Oct 2011 20:42:58 IST
   Subject: want to know the conversion of Ethanol to but-2-yne in simple steps .. ?????
[Up] View Post
vijay kharya (514)

Olaaa!! Perrrfect answer. 86  [128 rates]
vijay kharya's Avatar
total posts: 634    
Offline
what sir suuggested is a very good method, however u can also use the following method, protonate the -OH group, by adding moist Hcl, u'll get CH3CH3Cl, use wurtz reaction, u'll get butane, then monochlorinate in presence of sunlight u'll get 2-chlorobutane, use alc. KOH , and then add Br2 water and again add alc. KOh / NaNH2 , u'll but-2-yne.
  this reply:   0 points  (with 0  Olaaa!! Perrrfect answer.   in 0   votes   )     [?]
 
You have to be logged on to rate
  
[Post New] 6 Oct 2011 20:43:44 IST
   Subject: want to know the conversion of Ethanol to but-2-yne in simple steps .. ?????
[Up] View Post
vijay kharya (514)

Olaaa!! Perrrfect answer. 86  [128 rates]
vijay kharya's Avatar
total posts: 634    
Offline
oops...it's CH2CH2Cl ( d one u get after protonating the alcohol
  this reply:   0 points  (with 0  Olaaa!! Perrrfect answer.   in 0   votes   )     [?]
 
You have to be logged on to rate
  
 
reply Forum Index -> Organic Chemistry
Go to: 
Sponsored Links