This reaction is followed by bromination and rearrangement steps to generate flavonols in the Auwers synthesis. Proline catalyzes an asymmetric version of this reaction used to generate (-5[1])Hajos-Parrish (“high-OHSH-pare-ish”) ketones for steroid synthesis. (15[1])This reaction forms citrate from oxalo·acetate and acetyl-CoA (-5[1])in the first step of the TCA cycle. This reaction’s chair-like intermediate determines its stereochemistry according to the (*) Zimmerman-Traxler model. This reaction follows a Michael addition in the mechanism for the Robinson Annulation. (10[1])Under basic conditions, this reaction’s final step occurs via an E1cB mechanism to form an alpha-beta unsaturated product. For 10 points, name this reaction where an enolate attacks a carbonyl to make a product with both aldehyde and (10[1])alcohol groups. (10[2])■END■ (10[2]0[3])