CHE 230 Final Questions With Complete Solutions.

strong base, weak nucleophile correct answer: NaH strong base, weak nucleophile correct answer: DBN strong base, weak nucleophile correct answer: DBU strong base, strong nucleophile correct answer: HO- strong base, strong nucleophile correct answer: MeO- strong base, strong nucleophile correct answer: EtO- weak base, strong nucleophile correct answer: I- weak base, strong nucleophile correct answer: Br- weak base, strong nucleophile correct answer: Cl- weak base, strong nucleophile correct answer: RS- weak base, strong nucleophile correct answer: HS- weak base, strong nucleophile correct answer: RSH weak base, strong nucleophile correct answer: H2S weak base, weak nucleophile correct answer: H2O weak base, weak nucleophile correct answer: MeOH weak base, weak nucleophile correct answer: EtOH HX correct answer: markovnikov halogenation 1) O3/2)DMS correct answer: ozonolysis - splitting of double bond, adding a double bonded oxygen on its place. splits chains into 2 molecules and rings into chains 1) OsO4/2)NaHSO3,H2O correct answer: syn dihydroxylation, addition of two OH groups both to the same stereochemistry KMnO4/NaOH,cold correct answer: syn dihydroxylation, addition of two OH groups both to the same stereochemistry 1)RCO3H/2)H3O+ correct answer: anti-addition, addition of two OH groups at opposite stereochemistry X2, H2O correct answer: halohydrin formation, addition of a halogen group and an OH group, the OH gets added at the MORE substituted side X2 correct answer: halogenation, addition of two halogen groups at opposite stereochemistry H2/(Pd, Pt, Ni) correct answer: hydrogenation. The addition of two hydrogens to either side of a double bond, reduces alkene to alkanes and alkynes to alkenes too. Alkynes go to alkanes too, don't stop at alkenes. 1)BH3.THF/2)H2O2,NaOH correct answer: hydrobo