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Sourav posted an Question
September 23, 2020 • 00:27 am 30 points
  • IIT JAM
  • Chemistry (CY)

In knovaengel reaction, why only one decarboxylation take place on heating , there can be multiple co2 removed?

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    Priyanshu kumar Best Answer

    when two COOH group is present with respect to beta position to each other then CO2 is removed from one COOH group...that is decarboxylation

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    Bas beta position se ek decarboxylation hota hai...

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    iske product mai to 3 COOH group form honge.. to bas ek hi kyun remove hoga

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    Do COOH ek dusre se beta position me ho to waha possibility hota hai ek removal ka

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    haa to yha ek remove hoga na bs

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    left side kyun nahi?

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    ek gamma pe hai dekho

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    gamma wala remove kyun nahi hoga?

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    unstable hota hai na 2 carboxylic acid grp ek carbon pe..

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    means obvious hai ye dono beta honge ek dusre ke

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    sir gamma wala left side hai na?

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    main bol rha hu ek carbon pe do cooh grp hai to unstable hai to yha decarboxylation hua hai left side stable hai yha nhi hoga decarboxylation

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    jab ek carbon pe 2 cooh grp honge to dono cooh grp ek dusre ke beta position pe honge na

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    han

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    ye hai na.

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    bs yha hoga decarboxylation

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    sir mera doubt hai.. in some qs mai 2-3 decarboxylation hote hai.. hume kaise pata chalega k kitne karne hai

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    check krna jo unstable honge beta honge ek dusre ke respect me unka karna

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