andy1111 Posted May 7, 2012 Share Posted May 7, 2012 Hi Everyone, Just a quick question. If you want to turn a vicinal dihalide into an aklyne, then why do you need 3 equivalence of NaNH2 instead of only 2 equivalence? Thank you in advance. Link to comment Share on other sites More sharing options...
John Cuthber Posted May 7, 2012 Share Posted May 7, 2012 Why do you think you add any? How much is left near the end? Link to comment Share on other sites More sharing options...
andy1111 Posted May 7, 2012 Author Share Posted May 7, 2012 Why do you think you add any? How much is left near the end? I know that NaNH3 is a very strong base and is added to perform dehydrohalogenation but with two equivalence you've already turned the Vicinal dihalide into an alkyne. Why the extra equivalence? In my O-chem book it said the terminal alkyne acts as a weak acid but if you add another equiv of NaNH2 and then protonated it again you will still get the same product. Can you clarify this for me? Thank you in advance again. Link to comment Share on other sites More sharing options...
John Cuthber Posted May 7, 2012 Share Posted May 7, 2012 How much is left near the end? Link to comment Share on other sites More sharing options...
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