The chemical formula of propyne is
![](https://ask-chemistry.com/?qa=blob&qa_blobid=9790043214458130429)
The chemical formula of 2-aminobutane is
![](https://ask-chemistry.com/?qa=blob&qa_blobid=11789515461315070050)
?From Propyne how can you prepare 2-aminobutane
a) Reaction of propyne with NaNH2)
One of the major differences between the chemistry of alkynes and that of alkenes or alkanes is that a hydrogen bonded to a triply bonded carbon atom of a terminal alkyne is sufficiently acidic that it can be removed by a strong base, such as sodium amide NaNH2 to give an propynide anion
![](https://ask-chemistry.com/?qa=blob&qa_blobid=8999531890984720528)
b) Reaction of propynide anion with Haloalkane)
an propynide anion is a strong base. An propynide anion is also a nucleophile; it has an unshared pair of electrons that it can donate to another atom to form a new covalent bond. In this instance, an propynide anion donates its unshared pair of electrons to the carbon of a methyl or primary haloalkane, and, in so doing, the propynide nucleophile replaces the halogen atom. This type of reaction is called a nucleophilic substitution. For example, treating sodium propynide with 1-bromomethane gives 2-butyne
![](https://ask-chemistry.com/?qa=blob&qa_blobid=2681580493948029581)
An important feature of this reaction is that new carbon-carbon bonds are made, allowing the construction of larger carbon backbones from smaller ones
c) Reduction of 2-butyne by Hydrogen)
Reduction of 2-butyne by one mole of Hydrogen in presence of pt as catalyst
![](https://ask-chemistry.com/?qa=blob&qa_blobid=12172104555113229236)
d) Addition water to 2-butene)
But-2-ene is an unsatrated compound with one double bond. . It undergoes addition reaction with water molecule when treated with acidulated water forming butan-2-ol
![](https://ask-chemistry.com/?qa=blob&qa_blobid=3933109974985088079)
E) Oxidation of 2-butene)
But-2-ene is oxidised by Na2Cr2O7 in presence of H2SO4 forming 2-butanone
![](https://ask-chemistry.com/?qa=blob&qa_blobid=2924850330298515306)
F) Reductive Amination)
![](https://ask-chemistry.com/?qa=blob&qa_blobid=15217023068291667969)