Question: Draw the product(s) of the following reactions.
Draw the product(s) of the following reactions.
1. BH3 / THE
2. H2O2 / aqueous NaOH
• You do not have to consider stereochemistry. • Separate multiple products using the + sign from the dropdown menu. • You do not have to explicitly draw H atoms. • If no reaction occurs, draw the starting material.
Isaac Subramanium 276 answers
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Internal alkyne on hydroboration-oxidation forms ketone over the carbon which is less substituted in accordance to Anti-Markownikoff’s rule, but when the internal alkyne has equally substituted carbon at carbon-carbon triple bond, then the ketone group can be formed on either side of the bond.
Here, the internal alkyne is. The products formed is as follows:
(H3C),HCH2C- 2.H2O2/aqueous NaOH
2-methylheptan-4-one The treatment of prop-1-yn-1-ylbenzene with H, in the presence of Pd/Carbon eliminates the unsaturation due to this hydrogenation. The product obtained is as follows:
The treatment of the alkyne, dec-5-yne with the reducing agent Na/NH, to form trans alkene. The product obtained is as follows:
Na NH /
C= C—CH2CH2CH2CH3 – dec-5-yne
CH2CH2CH2CH3 dec-5-ene (trans product)