Q 12.9:In the following reaction, the first step involves a _____ attacking the C=O carbon atom.

Q 11.29: Which of the following arrow-pushing patterns COULD represent a S2 substitution reaction withthe substrate below?OHA-LGNuc attack-H+BA S 2 substitution reaction does not usually occur on a secondary alcohol since SN1substitution reactions are the preferred mechanism.CProton transferLoss of LGCarbocationrearrangementNuc attackProton transferD ) AS 2 substitution reaction is not possible on a tertiary alcohol due to steric hindrance.