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- Need clarity, kindly explain! When 2-butyne is treated with H2 /Lindlar’s catalyst, compound X isproduced as the major product and whentreated with Na/liq. NH3 it produces Y asthe major product. Which of the followingstatements is correct ?
When 2-butyne is treated with H2 /
Lindlar’s catalyst, compound X is
produced as the major product and when
treated with Na/liq. NH3 it produces Y as
the major product. Which of the following
statements is correct ?
- Option 1)
X will have higher dipole moment
and higher boiling point than Y. - Option 2)
Y will have higher dipole moment
and higher boiling point than X. - Option 3)
X will have lower dipole moment
and lower boiling point than Y. - Option 4)
Y will have higher dipole moment
and lower boiling point than X.
Answers (1)
As we learnt,
Birch Reduction -
Alkynes on reduction with sodium in liquid NH3 form trans alkene.
- wherein
Cis have higher dipole-moment than trans
Option 1)
X will have higher dipole moment
and higher boiling point than Y.
Option 2)
Y will have higher dipole moment
and higher boiling point than X.
Option 3)
X will have lower dipole moment
and lower boiling point than Y.
Option 4)
Y will have higher dipole moment
and lower boiling point than X.
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