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Identify X in the following reaction.(a) i) Br2-red P; ii) H2O(b) i) Cl2-red P; ii) H2O(c) PBr3-H2O(d) PBr5-H2OThe question was asked in an online quiz.This intriguing question comes from Carboxylic Acids Chemical Reactions topic in chapter Aldehydes, Ketones and Carboxylic Acids of Chemistry – Class 12 |
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Answer» RIGHT answer is (a) i) Br2-red P; ii) H2O To elaborate: Propanoic acid UNDERGOES bromination at alpha-carbon in the PRESENCE of red PHOSPHORUS to give α-Bromopropanoic acid. This is known as Hell-Volhard-Zelinsky REACTION. |
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