Cyclobutanolates undergoing one of these reactions can be used to construct seven-member ring frameworks. Quaternary ammonium compounds treated with silver oxide can undergo one of these reactions. A concerted form of these reactions creates anti-periplanar products. Alkyl halides (10[1])can be transformed with these reactions using DBU and other strong bases. Competition between kinetics and thermodynamics during these reactions (-5[1])can lead to products named for either Hofmann or (10[1])Zaitsev. (10[2]-5[2])The “1cB” (10[1]-5[1])form (10[1])of this reaction occurs when a poor leaving group is present on the alpha carbon in these pi-bond forming (-5[1])reactions. (10[1])For 10 points, name these general reactions that can form alkenes through either E1 or E2 mechanisms. ■END■ (10[2]0[2])