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Topic: preparing 4-methyl-2-pentyne  (Read 5124 times)

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damac

  • Guest
preparing 4-methyl-2-pentyne
« on: January 01, 2005, 01:27:31 PM »
Hi all this is my first post and i would like to thank you all in advance for your replies...

I have to prepare 4-methyl-2-pentyne.   I only have the following chemicals available acetylene,propyne,iodomethane, 2-bromopropane and 1,1-dichloro-3-methylbutane.  Also i can use any inorganic chemical that is necessary.

I have attempeted this problem for a week and the biggest problem is i dont even know where to start.

NISHANT

  • Guest
Re:preparing 4-methyl-2-pentyne
« Reply #1 on: January 01, 2005, 01:49:27 PM »
propyne should be reacted with silver or cupric chloride so that it's acidic hydrogen gets displaced by silver or copper.react the product with 2-bromo propane.bromine being a good leaving group would combine with silver of propyne and you would get 2-yne,4-methyl pentyne.follow it by sodium ethanol process by which alcohol will be formed and react it with RED P+IODINE.
PLEASE GIVE ME SOME SCOOBY SNACK

damac

  • Guest
Re:preparing 4-methyl-2-pentyne
« Reply #2 on: January 01, 2005, 01:58:22 PM »
Thank you very much

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