deck_16162414 Flashcards
Elimination
Conc. H2SO4, Heat (alc to alkene)
KOH(alc), Heat (haloalkane to alkene)
alcohol Substitution into Cl
SOCl2 or PCl5 or PCl3
Oxidation into diol
MnO4- or H+/MnO4-
Substitution into OH
KOH(aq), heat
Substitution into NH2
Conc. NH3(alc)
Substitution into Br or Cl
Cl2 or Br2, UV light and/ or heat
Addition alkene into dihaloalkane
Cl2, Br2
Oxidation into carboxylic axid (PRIMARY alcohol)
H+/MnO4-, Heat or H+/Cr2O7^2-
Addition alkene into Haloalkane
HCl, HBr
Addition into alkane
H2, Ni or Pt Catalyst
Additiion into OH
H+/H2O, heat OR dil. H2SO4, heat
Acid
Acids are proton (H+) donors
Bases
Bases are proton acceptors
Acid + Base
Salt (+H2O)
CH3CH2COOH + NaOH
CH3CH2COO^-Na^+
(sodium proponate) and H2O
Markovnikov’s rule
(rich gets richer) Carbon atom in the double bond with the most hydrogen atoms apready attached will get another hydrogen atom and the carbon atom with the least hydrogen atoms willl get the halogen atom attached
Alkane gen eq
CnH2n+2
Alkene Gen eq
CnH2n
Alkyne Gen eq
CnH2n-2
Alcahol Gen eq
CnH2n+1OH
Carboxylic Acid gen eq
CnH2n+1COOH
Amine gen eq
CnH2n+1NH2
Carboxylic acid tests
Blue litmus to red, red litmus stays red
Green UI turns orange (weak acid)
Amines base test
Red litmus turns blue, blue litmus stays blue
green UI turns blue (weak base)
Polar soluble
Small alcahols, small carboxylic acids and small amines (C1-4/5) are soluble as the -OH and -COOH and -NH2 groups are polar and are attracted to polar water molecules
non-polar
Alkane, Alkene, Alkyne
solubility for polar
For soluble organic molecules as #C increases solubility decreases (as non-polar hydrocarbon bit gets bigger)
What is Elimination?
Two atoms / groups are removed from adjacent carbon atoms and a double bond is created to form an alkene.
What is substitution?
An atom or group of atoms is replaced with another atom or group of atoms. There are 2 products.
What is oxidation
Reaction with either MnO4- OR Cr207 2-,
, both “oxidising agents” - usually used “acidified”,
‘, i.e. with H+
What is addition
The double bond is broken and two atoms/groups are added to each C atom of the double bond. There is one saturated product.
What is addition polymerisation?
Addition polymerisation occurs when the C=C in monomers breaks and the carbon atoms in this double bond join to each other from adjacent molecules to form long chains
E.g. Monomer = ethene, polymer = polyethene.