Draw the major organic product for the reaction shown.

Discipline: Chemistry

Type of Paper: Question-Answer

Academic Level: Undergrad. (yrs 3-4)

Paper Format: APA

Pages: 1 Words: 275

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Question

Draw the major organic product for the reaction shown. Select Draw Rings More Erase 1. PPh3 2. n-butyllithium 3. i

Expert Answer

The above reaction is known as Wittig reaction. Alkyl halide on reaction with PPh₃ undergo substitution reaction. Adding n-butyllithium which is a base undergo deprotonation on the carbon which is connected to the PPh₃ group to get a ylide intermediate. This ylide on reaction with benzaldehyde gives an alkene.

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$(+)\npphz\nBY\nPphz\nlo\n1. pph₃\nM-Buli\npphz.\nphz P P\nIL\nH\nН\n& Ph₂p=1\n$