Explain Hell-Vollhard-Zelinski reaction. Also illustrate its synthetic importance.
The Hell-Volhard-Zelinsky reaction is an organic reaction used to convert a carboxylic acid with an α-hydrogen and a halogen, to an α-halo carboxylic acid, using a phosphorous catalyst and water. The mechanism begins with the reaction of the
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Write chemical reactions for the following:
(i) Kolbe Schmidt reaction
(ii) Strecker synthesis
(iii) Dieckmann cobndensation
(iv) Knoevenagel reaction
(v) Perkin condensation
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Column I, Ion Column II, pKa
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Explain Hell-Vollhard-Zelinski reaction. Also illustrate its synthetic importance.
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How will you prepare the following ?
(i) 10 -Hexyne from ethyne
(i) Ethanol from ethyne
(ii) 3-Hexanone from 3-hexyne.