Chapter 6.7, Problem 6.68P

Interpretation Introduction

Interpretation:

Major product for the Wittig reaction has to be predicted.

Concept Introduction:

Wittig Reaction: It is an organic reaction where an aldehyde or a ketone gets converted to an alkene by replacing carbonyl group by a $C=C$ bond. A phosphorous ylide is used for this conversion. It is a neutral molecule where a positively charged phosphorous is attached to a negatively charged carbon atom.

Non-stabilized ylide (having electron donating group on negatively charged carbon) gives Z-isomer whereas stabilized ylide (having electron withdrawing group on negatively charged carbon) gives E-isomer.