Identify the reagents you would use to accomplish the following transformation

cech equiv ch rightarrow cech2chch2ch3

the transformation above can be performed with some reagent or combination of the reagents below give the necessary reagents

Question

Identify the reagents you would use to accomplish the following transformation:

\ce{CH \equiv CH} \rightarrow \ce{CH2=CH-CH2-CH3}

The transformation above can be performed with some reagent or combination of the reagents below. Give the necessary reagent(s) in the correct order, as a string of letters (without spaces or punctuation, such as "EBF"). If there is more than one correct solution, provide just one answer.

A. 1) O₃; 2) DMS
B. 1) R₂BH; 2) H₂O₂, NaOH
C. MeI
D. H₂, Lindlar's cat.
E. Na, NH₃ (l)
F. NaNH₂
G. CH₃CH₂Br
H. H₂SO₄, H₂O, HgSO₄
I. MeONa

ng a fn

Jennifer Rojas · Answer

To accomplish the transformation of $\ce{CH \equiv CH}$ to $\ce{CH2=CH-CH2-CH3}$ , you can first reduce the alkyne to a trans-alkene and then perform hydroboration followed by oxidation. Here are the necessary steps:

Use Na, $\ce{NH_3 (l)}$ (which is option E) to convert the alkyne to a trans-alkene.
Use $\ce{R_2BH}$ followed by $\ce{H_2O_2}$ , NaOH (which is option B) to perform hydroboration-oxidation and obtain the desired product.

So, the string of letters indicating the correct order of reagents is "EB".

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