Organic Chemistry Mechanisms

Basic addition and subtraction reactions

17 cards   |   Total Attempts: 188
  

Cards In This Set

Front Back
MCPBA
Attacks double bonds, form epoxides
Osmium Tetroxide + H2O2
Yields syn addition of 2 alcohol groups
Hg(OAc)2 + NaBH4 + -HO
Yields an Markovian, anti addition of OH and H
BH3:THF
Yields an anti-markovian, syn addition of OH & H
Hydride Shifts
Move to create MORE STABLE carbocations (substituted) and double bonds
H+ ions (from strong acids)
Attack epoxides to form OH groups
H2O
O will attack + charges and lose an H to form an alcohol
R2
Yields anti addition to a double bond
OH + Halohydrin
Attacks alcohol group, halogen leaves; forms epoxide group
H2CN2
Forms carbene group; attacks double bond to form 3 member ring
Anions
Take H+ to form double bonds
take R groups to form double bonds

normally attached to Na+ or K+, etc.
R2 + OH
Form halohydrins


OH can be derived from H2O
Bulky bases
Attache to least substituted carbon -- size of the base & interference of orbitals prevents bonding
H2SO4
Remove alcohol groups
H2 + lindler's Catalyst
Syn addition of 1 pair of Hydrogens to an alkyne to from an alkene


DOES NOT FORM AN ALKANE