Choose the correct reactants to synthesize 1-butyne from 1-butene. 1.) BH3:THF 2.) H2O2,OH− 1.) t-BuOK, t-BuOH, heat 2.) 2NaNH2, mineral oil, heat 1.) HBr (no peroxides) 2.) Cl2,H2O 3.) NaNH2, mineral oil, heat 1.) Br2 2.) 3NaNH2, mineral oil, heat 3.) NH4Cl