For 10 points, name this functional group that is attacked by a hydroxide ion in the Cannizzaro reaction and can be reduced to a hydroxyl group.
This functional group is reduced in the Luche reaction. The Burgi-Dunitz angle is important in Anh's modification of the Felkin model, which involves the minimization of torsional strain of a transition state when molecules containing this functional group are nucleophilically attacked. If the desired product of a Meerwein-Pondorf-Verley reduction contains this functional group, then that reaction is known as the Oppenheimer oxidation. Molecules containing two of these functional groups are condensed in the Paal-Knorr synthesis, and one of its bonds is broken to form a betaine in the Wittig reaction. For 10 points, name this functional group that is attacked by a hydroxide ion in the Cannizzaro reaction and can be reduced to a hydroxyl group.
This functional group is reduced in the Luche reaction. The Burgi-Dunitz angle is important in Anh's modification of the Felkin model, which involves the minimization of torsional strain of a transition state when molecules containing this functional group are nucleophilically attacked.
carbonyl group [do not accept or prompt on "aldehyde" or "ketone" as every clue is about the group itself and not a compound containing it]