heated zinc dust
cyclic aromatic (likely benzene)
heat
KOH
de-hydro-halogenation
e1 elimination
alc. KOH/NH2-/OH-/tBuO-
strong base
Anti e2 elimination
form alkene
alpha and beta carbon se elimination ( X and H)
pyrolysis of ester/xanthates/amine oxides
cyclization and syn add
E1(C.b) condition
conjugate base, unimolecular
poor leaving groups
F,OH,N+R3,S+R2, OR