Hydroboration - Study guides, Class notes & Summaries

Exam 3 Reactions Chem 210 100% Accurate 1. BH3 2. H2O2/NaOH - ANSWERHydroboration Syn addition, OH to less sub side - ANSWERWhat happens in hydroboration addition reaction? H2, Pt - ANSWERReduction with H2 Syn addition of H's across pi bond - ANSWERwhat happens in a reduction with H2? 1. O3 2. Zn - ANSWEROzonolysis Each double bond cut with O's added at both sides of each cut - ANSWERWhat happens in an ozonolysis reaction? HBr - ANSWERHydrohalogenation Halogen added to...

H-X CCl4 - ANSWERADD STRONG ACIDS, -hydrohalogens - Mark w H-shift + cat. (X= Cl, Br, I) SYN+ANTI H2O H2SO4 - ANSWERADD WEAK ACIDS, -hydration -Mark SYN + ANI Cl2, Br2, I2 CCl4 - ANSWERADD X2 (Cl, Br, I), halogenation ANTI Cl2, Br2, I2 H2O / R-OH - ANSWERADD halogen and OH halohydrin ANTI 1) NCS, NBS, NIS 2) H2O / R-OH - ANSWERADD halogen and OH halohydrin ANTI H-OX/ R-OX (X=Cl, Br, I) - ANSWERADD halogen (X) and OH halohydrin ANTI 1) BH3 2) NaOH, H2...

OsO4 and (H2O or Na2SO3) // KMnO4 and (NaOH or H2O) - ANSWEROH/OH dihydroxylation syn RCO3H or mCPBA - ANSWEREpoxidation add O to make an epoxy. Most substituted double bond reacts first X2 and (H2O or XOH) - ANSWER(X/OH)Halohydrin formation epoxy ion intermediate, anti, markovnikov, H2O added to more sub. carbon Cl2 or Br2 - ANSWERHalogenation, anti, epoxy ion intermediate H2O and H2SO4 - ANSWER(H/OH) Hydration, syn and anti addition, markovnikov, C+ intermediate, can make keto if i...

Addition - ANSWERA reaction involving an increase in the number of groups attached to the alkene and a decrease in the number Regiochemistry - ANSWERThe orientation of a chemical reaction on an unsymmetrical substrate. In additions to alkenes, the regiochemistry of the addition involves which part of the reagent adds to which end of an unsymmetrical alkene. Regioselective reaction - ANSWERA reaction in which one direction of bond making or bond breaking occurs preferentially over all other...

Chem 210: Chapter 8 Correct 100% Addition - ANSWERA reaction involving an increase in the number of groups attached to the alkene and a decrease in the number Regiochemistry - ANSWERThe orientation of a chemical reaction on an unsymmetrical substrate. In additions to alkenes, the regiochemistry of the addition involves which part of the reagent adds to which end of an unsymmetrical alkene. Regioselective reaction - ANSWERA reaction in which one direction of bond making or bond breakin...

Lewis Acid - correct answer Any species that can accept electrons Polar-Covalent Bond - correct answer A bond between two atoms differing in electronegativity by 0.5 - 2 Hydrophillic - correct answer A term used to describe a "water loving" species Bronsted-Lowry Acid - correct answer A compound that can donate a proton Electronegat...

1. BH3 2. H2O2/NaOH - ANSWERHydroboration Syn addition, OH to less sub side - ANSWERWhat happens in hydroboration addition reaction? H2, Pt - ANSWERReduction with H2 Syn addition of H's across pi bond - ANSWERwhat happens in a reduction with H2? 1. O3 2. Zn - ANSWEROzonolysis Each double bond cut with O's added at both sides of each cut - ANSWERWhat happens in an ozonolysis reaction? HBr - ANSWERHydrohalogenation Halogen added to more sub side - ANSWERWhat happens in a hyd...

OsO4 and (H2O or Na2SO3) // KMnO4 and (NaOH or H2O) - ANSWEROH/OH dihydroxylation syn RCO3H or mCPBA - ANSWEREpoxidation add O to make an epoxy. Most substituted double bond reacts first X2 and (H2O or XOH) - ANSWER(X/OH)Halohydrin formation epoxy ion intermediate, anti, markovnikov, H2O added to more sub. carbon Cl2 or Br2 - ANSWERHalogenation, anti, epoxy ion intermediate H2O and H2SO4 - ANSWER(H/OH) Hydration, syn and anti addition, markovnikov, C+ intermediate, can make keto if i...

Hydroboration Oxidation of Styrene experiment in an organic chemistry lab

H-X CCl4 ADD STRONG ACIDS, -hydrohalogens - Mark w H-shift + cat. (X= Cl, Br, I) SYN+ANTI H2O H2SO4 ADD WEAK ACIDS, -hydration -Mark SYN + ANI Cl2, Br2, I2 CCl4 ADD X2 (Cl, Br, I), halogenation ANTI Cl2, Br2, I2 H2O / R-OH ADD halogen and OH halohydrin ANTI 1) NCS, NBS, NIS 2) H2O / R-OH ADD halogen and OH halohydrin ANTI H-OX/ R-OX (X=Cl, Br, I) ADD halogen (X) and OH halohydrin ANTI 1) BH3 2) NaOH, H2O2 ADD OH and H hydrobo...