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 can be transformed (10[1])with these reactions using DBU and other strong bases. (10[1])Competition between kinetics and thermodynamics during these reactions (10[1])can lead to products named for either Hofmann or Zaitsev. (10[1])The “1cB” form of this reaction (-5[1])occurs when a poor leaving group is present on the alpha carbon in these pi-bond forming reactions. For 10 points, name these general reactions (10[2])that can form (-5[1])alkenes through either E1 or E2 mechanisms. (10[1])■END■ (10[1]0[11])