For 10 points, name these reactions, contrasted with substitution reactions, where two substituents are removed from a hydrocarbon to form an alkene.
In a named reaction of this type, hydroxylamine, sodium methoxide, and acetic anhydride are sequentially reacted with glucose to convert it to arabinose. The aldol condensation proceeds via this reaction type after a carbonyl group is deprotonated to an enol [EEN-all], its conjugate base. Bulky substituents like tert-butyl can lock cyclohexane into a conformation that maximizes rates of reactions of this type due to maximal s-orbital overlap, called (*) antiperiplanar. Potassium-t-butoxide reacting with tertiary carbons would enable these reactions to proceed faster than competing ones since it maximizes steric hindrance. Hydrogen is removed from the carbon with the least hydrogens according to Zaitsev's rule for these reactions. For 10 points, name these reactions, contrasted with substitution reactions, where two substituents are removed from a hydrocarbon to form an alkene.
In a named reaction of this type, hydroxylamine, sodium methoxide, and acetic anhydride are sequentially reacted with glucose to convert it to arabinose.
elimination reaction [accept any specific subtypes, such as Wohl degradation, dehydration, E1, E2, E1cb, unimolecular elimination, etc.; prompt on E] &lt;JL, Chem&gt;