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Copy edited (e.g. ref. <www.youtube.com/watch?v=1Dax90QyXgI&t=17m54s>, <en.wikipedia.org/wiki/Joint_Entrance_Examination#JEE_Main>, <en.wikipedia.org/wiki/Lindlar_catalyst>, and <en.wikipedia.org/wiki/Portable_Document_Format>). There is more than one aldehyde, nitrile, or carbonitrile.
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edit approved Aug 8, 2021 at 17:26
Peter Mortensen
edit approved Aug 8, 2021 at 17:26
Peter Mortensen
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Can a Lindlar catalyst reduce aldehydealdehydes, nitrilenitriles, and carbonitrilecarbonitriles?

The major product obtained in the following reaction is  :   

enter image description hereEnter image description here

Question Sourcesource: JEE MAINSJEE Main 2019

MoleculeThe molecule shown as product is the official answer given by JEE from the given options.

I have written the possible intermediate molecule formed by reagentsreagents. On Google I have obtained information in this pdfthis PDF document (pg-page 3) that a lindlar's catalystLindlar catalyst is poisoned, so that it cannot reduce an aldehyde. Also there is no information of lindlar'sa Lindlar catalyst being used as the reducing agent for nitriles and carbonitriles.

So, is the answer by JEE incorrect or I am I missing something.?

Can Lindlar catalyst reduce aldehyde, nitrile and carbonitrile?

The major product obtained in the following reaction is  :  enter image description here

Question Source: JEE MAINS 2019

Molecule shown as product is the official answer given by JEE from given options.

I have written the possible intermediate molecule formed by reagents. On Google I have obtained information in this pdf (pg-3) that lindlar's catalyst is poisoned so that it cannot reduce aldehyde. Also there is no information of lindlar's catalyst being used as reducing agent for nitriles and carbonitriles.

So, is answer by JEE incorrect or I am missing something.

Can a Lindlar catalyst reduce aldehydes, nitriles, and carbonitriles?

The major product obtained in the following reaction is: 

Enter image description here

Question source: JEE Main 2019

The molecule shown as product is the official answer given by JEE from the given options.

I have written the possible intermediate molecule formed by reagents. On Google I have obtained information in this PDF document (page 3) that a Lindlar catalyst is poisoned, so that it cannot reduce an aldehyde. Also there is no information of a Lindlar catalyst being used as the reducing agent for nitriles and carbonitriles.

So, is the answer by JEE incorrect or am I missing something?

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Jay
Jay
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Can Lindlar'sLindlar catalyst reduce aldehyde, nitrile and carbonitrile?

The major product obtained in the following reaction is : enter image description here

Question Source: JEE MAINS 2019

Molecule shown as product is the official answer given by JEE from given options.

I have written the possible intermediate molecule formed by reagents. On Google I have obtained information in this pdfpdf (pg-3) that lindlar's catalystlindlar's catalyst is poisoned so that it cannot reduce aldehyde. Also there is no information of lindlar's catalyst being used as reducing agent for nitriles and carbonitriles.

So, is answer by JEE incorrect or I am missing something.

Can Lindlar's catalyst reduce aldehyde, nitrile and carbonitrile?

The major product obtained in the following reaction is : enter image description here

Question Source: JEE MAINS 2019

Molecule shown as product is the official answer given by JEE from given options.

I have written the possible intermediate molecule formed by reagents. On Google I have obtained information in this pdf (pg-3) that lindlar's catalyst is poisoned so that it cannot reduce aldehyde. Also there is no information of lindlar's catalyst being used as reducing agent for nitriles and carbonitriles.

So, is answer by JEE incorrect or I am missing something.

Can Lindlar catalyst reduce aldehyde, nitrile and carbonitrile?

The major product obtained in the following reaction is : enter image description here

Question Source: JEE MAINS 2019

Molecule shown as product is the official answer given by JEE from given options.

I have written the possible intermediate molecule formed by reagents. On Google I have obtained information in this pdf (pg-3) that lindlar's catalyst is poisoned so that it cannot reduce aldehyde. Also there is no information of lindlar's catalyst being used as reducing agent for nitriles and carbonitriles.

So, is answer by JEE incorrect or I am missing something.

Source Link
Jay
Jay
  • 802
  • 4
  • 24

Can Lindlar's catalyst reduce aldehyde, nitrile and carbonitrile?

The major product obtained in the following reaction is : enter image description here

Question Source: JEE MAINS 2019

Molecule shown as product is the official answer given by JEE from given options.

I have written the possible intermediate molecule formed by reagents. On Google I have obtained information in this pdf (pg-3) that lindlar's catalyst is poisoned so that it cannot reduce aldehyde. Also there is no information of lindlar's catalyst being used as reducing agent for nitriles and carbonitriles.

So, is answer by JEE incorrect or I am missing something.