convert ethyne to hex-2-yne , ethyne to hept-2-yne
Answers
• According to the question,we have to Convert ethyne to hex-2-yne , ethyne to hept-2-yne
•And now when ethyne reacts with NaNH2 & NH3, -C≡C- formed, when -C≡C- reacts with excess amount of C2H5Br(2 moles) ,Hex - 2-yne formed.
•And when ethyne reacts with NaNH2 & NH3, -C≡C- formed, when -C≡C- reacts with excess amount of C2H5Br and CH3Br ,Hept - 2-yne formed.
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To convert
Explaination:
To convert the following compounds,we need to follow the steps,
(a) ethyne to hex-2-yne
H-C ≡C-H + Na NH2 +CH3 Br -----------------> HC≡C-CH3
ethyne
H C ≡C-CH3 + Na NH2 +CH3 CH2 CH2 Br ---------------> CH3 -CH2-CH2-C≡C-CH3
hex-2-yne
(b) ethyne to hept-2-yne
HC ≡C-H + Na NH2 +CH3 Br ---------------> HC≡C-CH3
ethyne
H C ≡C-CH3 + Na NH2 +CH3 CH2 CH2CH2 Br --------------->CH3 -CH2-CH2-CH2-C≡C-CH3
hept-2-yne