oninstructure.com/courses/36821/quizzes/86223/ta D | Question 1 15 pts Wittig re

Question

oninstructure.com/courses/36821/quizzes/86223/ta D | Question 1 15 pts Wittig reaction takes two substrates and teathers them together in a product which contains an alkene. Which of the following reaction produce an alkene product from two substrates? O Imine schiff base formation O Julia-Lythgoe reaction O All isted reactions are correct answers except "Imine schif base tormatian O Heck Reaction O All listed reactions are correct answers except Juia-Lythgoe reaction Dicls-Alder reaction All listed reactions are correct answers except "Heck Reaction All listed reactions are correct answers except-Diels-Alder reaction. Grubbs reaction All listed reactions are correct answers O % O DQuestion 2 What is the energetic driving force in the Wittig reaction? O Formation of the phosphine oxide ? Heat 2+2 cycloaddition O Extreme reactivity of the ylide

Explanation / Answer

Qu.1.The following reactions are used for Alkene synthesis:

1)Juha-Lythgoe : This involves the addition of phenyl sulfonyl carbanion to an aldehyde to form E-alkene

2)Heck Reaction: Reaction of unsatureted halide with an alkene in presence of base & Pd catalyst to form substituted alkene.

3)Grub,,s Metathesis reaction: Synthesis of higher lakenes using Rudhenium catalyst to form higher alkenes through metathesis reaction.

Q.2.The formation of the phosphine oxide is the driving force in Wittig reaction

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