what-is-the-best-pair-of-a-phosphonium-ylide-derived-from-an-alkyl-halide-and-a-

Question

What is the best pair of a phosphonium ylide (derived from an alkyl halide) and a carbonyl compound for synthesizing the given alkene?

Chemical structure of an alkene related to imine and enamine synthesis.

Accepted Answer

Reaction scheme showing a carbonyl compound and phosphonium ylide for alkene synthesis.

Answer

Reaction scheme with a different phosphonium ylide and carbonyl compound for alkene synthesis.

Answer

Reaction scheme illustrating another carbonyl compound and phosphonium ylide for alkene synthesis.

Answer

The compound cannot be synthesized via the Wittig reaction.