Choose the statements that accurately describe the Wittig reaction.

STRATEGY: Review the characteristics of the Wittig reaction. Consider the types of reactants involved, the type of transformation that occurs, and the types of products that result.

A. the product is an ylide
B. involves a ylide as a reactant/intermediate
C. results in a betaine intermediate
D. a ketone is a required reactant
E. a C=C bond becomes saturated

B. Involves a ylide as a reactant/intermediate  

C. Results in a betaine intermediate

Explanation:

The Wittig reaction is the reaction of an aldehyde or ketone with a triphenylphosphonium ylide to form an alkene.

A betaine intermediate is the precursor to an oxaphosphetane intermediate.

A. is wrong. The ylide is a reactant/intermediate.

D. is wrong. The reactant can be an aldehyde

E. is wrong. A C=O bond becomes a C=C bond.

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the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.