Does NaBH4 reduce conjugated double bond?

Sodium borohydride It is also convenient that, although LiAlH4 is strong enough to reduce the C=C Page 2 of a conjugated carbonyl compound, NaBH4 is not; thus the carbonyl group can be reduced without the alkene.

Can NaBH4 reduce C double bond N?

NaBH4 is not able to reduce isolated C=C bond. But, NaBH4 reduces the double bond present in an enal (a conjugated aldehyde). After the reaction C=C bond is gone and left aldehyde is reduced to alcohol in next step by NaBH4.

What can NaBH4 not reduce?

NaBH4 is effective reducing agent for the reduction of aldehydes, ketones and acyl chloride to alcohol but it cannot reduce esters, carboxylic acids and amides.

Are alkenes reduced by NaBH4?

Alkenes and alkynes are rapidly reduced to the corresponding alkanes using sodium borohydride and acetic acid in the presence of a small amount of palladium catalyst.

Which of the following compound reduces by NaBH4?

Aldehydes and ketones are easily reduced by sodium borohydride (NaBH4).

Does NaBH4 reduce nitro groups?

[Google Scholar] It is known that solely sodium borohydride does not reduce nitro compounds under ordinary conditions. However, the reducing power of this reagent or its polymeric analogue (BER) undergoes a drastic change toward reduction of nitro groups by the combination with metal halides or salts2.

What does NaBH4 do to alkenes?

Use of unmodified sodium borohydride would result in a 1,4 conjugate addition reaction, saturating the alkene, with a subsequent reduction of the ketone to an alcohol.

How do you get rid of a double bond?

Addition of hydrogen to a carbon-carbon double bond is called hydrogenation. The overall effect of such an addition is the reductive removal of the double bond functional group.

How do you reduce nitro groups?

One of the most important reactions of aromatic substituents is the reduction of nitro groups to amines. This can be done using two general methods: Addition of an easily oxidized metal like iron (Fe), tin (Sn) or zinc (Zn) in the presence of acid, such as HCl (but often just written, “H+ “) will convert NO2 to NH2.

Can NaBH4 reduce nitrobenzene?

NaBH4, a mild reducing agent, does not reduce nitroaromatic compounds under normal conditions. However, several NaBH4 catalytic systems have been developed for the reduction of nitroaromatic compounds. The reduction of nitrobenzene was studied to screen the catalysts.