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COMEDK2024ChemistryHaloalkanes and HaloarenesActual

Consider the following reaction ( CH ₃)₂ CHCH ₂ Br +( CH ₃)₃ CCH ₂ Br [ ] Na /dry ether X + Y + Z Identify the product which is not formed?

Options

  1. A2, 2, 5, 5-tetramethylhexane
  2. B2, 2, 4, 4-tetramethylhexane
  3. C2, 2, 5-trimethylhexane
  4. D2, 5-dimethylhexane

Correct answer

B. 2, 2, 4, 4-tetramethylhexane

Step-by-step solution

The reaction is a Wurtz coupling reaction involving two different alkyl halides: R1-Br and R2-Br, where R1 is (CH3)2CHCH2- (isobutyl group) and R2 is (CH3)3CCH2- (neopentyl group). In a Wurtz reaction with a mixture of two different alkyl halides, the possible products are the symmetrical coupling products of each radical and the cross-coupling product. The radicals formed are R1 radical: (CH3)2CHCH2- and R2 radical: (CH3)3CCH2-. The possible products are: 1. R1-R1: (CH3)2CHCH2-CH2CH(CH3)2, which is 2,5-dimethylhex

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