This reaction is followed by bromination and rearrangement steps to generate flavonols in the Auwers synthesis. Proline catalyzes an asymmetric version of this (15[1])reaction (15[2])used to generate (-5[1])Hajos-Parrish (“high-OHSH-pare-ish”) ketones (-5[1])for steroid synthesis. (15[1]-5[1])This reaction forms citrate from oxalo·acetate (-5[1])and acetyl-CoA (15[2]-5[2])in the first (-5[1])step (-5[1])of the TCA cycle. (15[1])This reaction’s (-5[1])chair-like (-5[1])intermediate determines its stereochemistry according to the (*) Zimmerman-Traxler (10[1]-5[1])model. (10[1]-5[1])This reaction follows a Michael addition in the mechanism (10[1]-5[1])for the Robinson Annulation. (10[2])Under basic (10[1])conditions, (10[1])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 (10[2])with both aldehyde (-5[1])and (10[1])alcohol groups. (10[3])■END■ (10[3]0[25])