Post on 31-Mar-2015
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All Organic Compounds
Hydrocarbons Hydrocarbon Derivatives
Standard Hydrocarbons with CxHx
Hydrocarbons..(C’s and H’s) BUT ALSO other elements.
Organic Halides: are when 1 or more hydrogens have been replaced by a halogen (Group 17; F, Cl, Br, I)
The element itself (Organic Halide) is its own functional group and is named the same as any other branch group.
1 2
Practice (Easy)
1234567
***Name the side branches alphabetically just like with ethy and methy, etc.***
Practice (Cyclo/Benzene)
This type of reaction occurs when UNSATURATED hydrocarbons react with diatomic molecules like;
H2
Cl2
Br2
I2
HBrHClHI
The addition of these diatomic molecules saturate the
hydrocarbon…..breaks the double or triple bonds and adds BOTH onto the chain.
H H
***Addition of H2 breaks the double bond and adds the hydrogens onto the hydrocarbon.***
***For every diatomic molecule you add to a UNSATURATED hydrocarbon it break a bond…so it breaks the “unsaturations” step by step.***
ClH
Step 1
ClH
Step 2
2, 2 – dichloropropane
Cl
H
This type of reaction occurs when SATURATED hydrocarbons react with diatomic molecules like;
H2
Cl2
Br2
I2
HBrHClHI
The substitution of these diatomic molecules trade places with hydrogens already in the
hydrocarbon…..breaks the SINGLE BOND and adds ONE onto the chain.
The second joins with substituted element and forms another compound that leaves the hydrocarbon chain.
Just indicates a common catalyst…DOES NOT MAKE A DIFFERENCE!!!
Cl
Such as;
1. Higher Solubility in water.2. Increased boiling point . 3. Short-Chain alcohols (less than 3 C’s are VERY soluble.4. Long chain alcohols (more than 5) are slightly soluble.
Adding an alcohol(OH-) Functional Group to a hydrocarbon drastically changes the properties of the hydrocarbon.
Methanol and EthanolMethanol (CH3OH) AND Ethanol (CH3CH2OH) are the two most common alcohols.
***Because Methanol and Ethanol only differ from one another by a “CH2” they are part of a
“homologous series”.***
Homologous Series:A series of compounds that only differ by a single repeated “group”.
CH3OH CH3CH2OH CH3CH2CH2OHCH3CH2CH2CH2OHMethanol Ethanol Propanol Butanol
Alcohol…Alcohol was is made by fermentation (yeast, baking, making bread).
Alcohol is poisonous, the “drunk” feeling is the feeling of being poisoned.
The disorientation and loss of motor functions (stumbling) is because YOU ARE BEING POISONED!
Ethanol CH3CH2OH is the ONLY alcohol that wont outright kill you.
So…..DON’T TRY TO MAKE IT….IT COULD BE WRONG.
Alcohol…Alcohol added to fuel to help it burn more efficiently.
Alcohol often added to fuel to as gas line antifreeze.
CH3OH (methanol) is TOXIC.
Add methanol to Ethanol (alcohol you could drink) makes IT TOXIC TOO.
Ethanol used in;Lacquers.Varnishes.Perfume.Synthetic Flavours.
Naming AlcoholsHydrocarbons that contain alcohols are named THE SAME way as usual.
1. You name the longest parent chain.2. You use –ane –ene –yne for single, double, triple bonds.**You number the hydrocarbon ‘Parent Chain” so branches are on lowest carbon numbers****Number the carbons so ALCOHOL is on the lowest number possible** 3. You add “–ol” on the end of a hydrocarbon to show an alcohol (OH) functional group is present.
-C-C-C-C-C-C-C-OHH H
H
H
HH
H
H H
HH
HH
H
H
7 Carbons long
Hept
All single bonds
an
1234567
Number carbons so OH on lowest number.
-1-ol
***Its very common to just NOT put -1- for alcohols on the end of hydrocarbons***
Heptanol
Multiple Alcohols***When there is more than 1 alcohol functional group in a hydrocarbon you describe it the same as you would if there were multiple F’s or Br’s (Halide groups).***Diol -----2Triol-----3
***Make sure if you use “di” you have listed two places….1,2 or 2,5..3,4…etc****
***Make sure if you use “tri” you have listed three places….1,2,3 or 2,2,5..3,5,5…etc****
H--C--C--C--C--C--HH
H
OH
H
HH
OHH
H
H12345
Practice
5 Carbons long
Pent
--
A DOUBLE BOND!!
-1-ene
Number carbons so double bond on lowest number.
Alcohol groups on 2 different carbons.
diol
State which carbon alcohol groups are on.
-2,4-
AlcoholsPrimary, Secondary, Tertiary
Whether an alcohol containing hydrocarbon is considered primary, secondary, or tertiary is dependant on the Carbon that the OH group is attached to.
H--C--C--C--C--C--OHH
H
H
H
HH
H H
H
H
The carbon that the OH group is attached to make this a primary alcohol.
Carbon connect to ONE other carbon makes it primary.
AlcoholsPrimary, Secondary, Tertiary
Whether an alcohol containing hydrocarbon is considered primary, secondary, or tertiary is dependant on the Carbon that the OH group is attached to.
H--C--C--C--C--C--HH
H
H
H
OHH
H H
H
H
The carbon that the OH group is attached to make this a secondary alcohol.
Carbon connect to TWO other carbon makes it secondary.
AlcoholsPrimary, Secondary, Tertiary
Whether an alcohol containing hydrocarbon is considered primary, secondary, or tertiary is dependant on the Carbon that the OH group is attached to.
H--C--C--C--C--C--HH
H
H
H
HOH
H H
H
--C-- The carbon that the OH group is
attached to make this a Tertiary alcohol.
Carbon connect to
THREE other carbon makes it secondary.
HH
H
AlcoholsCombination Practice
Whether an alcohol containing hydrocarbon is considered primary, secondary, or tertiary is dependant on the Carbon that the OH group is attached to.
H--C--C--C--C--C--HH
H
H
H
HOH
H H
H
--C--HH
H
12345
5 Carbons long.
an
All SINGLE bonds.
pent
OH on carbon 3.
-3-ol
CH3 group (methyl) on carbon 3.
3-methyl
Practice Cyclo/Benzene
Alcohols
OH
OH
Cyclopentane-1,2-diolOr
O-cyclopentane-diol
OH
OH
Cyclohexane-1,3-diolOr
M-cyclohexane-diol
Practice Cyclo/Benzene
Alcohols
OH
OH
Cyclopentane-1,2-diolOr
O-cyclopentane-diol
Elimination Reactions
It is often very useful to be able to create alkenes and alkynes from alkanes.
This can be done in TWO ways;
1. Ethene produced from Ethane Cracking
2. Ethene produced by Ethane Elimination Reactions.
Ethane cracking is a special hydrocarbon cracking in which Ethane (single bonded-Saturated) is “cracked” into Ethyne (double bonded-unsaturated).
Elimination and Addition Reactions
H--C--C--C--C--C--OHH
H
H
H
HH
H H
H
H
***Elimination reactions are also called Dehydration reaction because they UNSATURATE a hydrocarbon and produce water as a second product.***
Pentanol
H2SO4
H3PO4
H--C--C--C--C--CH
H
H
H
HH
H H
H
H
--
Pentene
+ H2O
Elimination and Addition Reactions
H--C--C--C--C--C--HH
H
H
H
HH
Cl H
H
H
***Elimination reaction are also called Dehydration reaction because they UNSATURATE a hydrocarbon and produce water as a second product.***
2- chloropentane
KOHNaOH
+
H--C--C--C--C--C--HH
H
H
H
HH
Cl-H
H
--+ + H2O
Pent-2-ene
Elimination and Addition Reactions
***Addition reaction are also called hydration reactions because they SATURATE a hydrocarbon by adding water as a reactant.***
It is the exact opposite of a hydration reaction. The double or triple bond is broken and the H and OH group are added onto the carbons to keep the 4 bonds rule.
H--C--C--C--HH H
H
H--
Propene
+ HOH H--C--C--C--HH
H
H
H
H
OH
Propan-1-ol
Alcohols and Elimination Reactions
Functional Group: -OH (hydroxyl group)
• Drop the “e” from the end of the alkane, alkene, or alkyne and add -ol
• If necessary add the number of the carbon the –OH group is on; eg., propan-1-ol and propan-2-ol
• If there are more than 1 OH you keep the whole name (KEEP THE “E”) use “di” or “tri” “ol” instead.
Alcohols and Elimination Reactions
Preparation:If you react an alkENE with water (hydration reaction) it will break the double or triple bond and add “H” and “OH”.
H--C--C--C--HH H
H
H--
Propene
+ HOH
Water
H--C--C--C--HH
H
H
H
H
OH
Propan-1-ol
Alcohols and Elimination Reactions
Elimination Reactions:(Dehydrations)• The opposite of an addition (hydration) reaction.
An Alcohol is unsaturated creating a double bond and H2O.
General Formula:Alcohols alkene + Water
R-C—C-ROHH
HH H2SO4
H3PO4
R-C = C-R
HH
+ HOH
Alcohols and Elimination Reactions
Elimination Reactions:(Organic Halide (OH-/Basic)
• The reaction of hydrocarbons containing a halide (F, Cl, Br, I) with an OH- group (basic environment)
General Formula:Organic Halide + OH- Alkene + Halide ion (Cl-) + Water
R-C—C-RClH
HH R-C = C-R
HH
+ HOH
+ Cl-
+ OH-
A functional group consisting of; a double bonded oxygen and OH groups bound to end carbon of a hydrocarbon.
***Can be attached to ANY hydrocarbon chain***Carboxylic acid naming is done the same as a normal hydrocarbon EXCEPT at the end of the hydrocarbon name you add “–oic acid”
Methane Methanoic Acid
Butane Butanoic Acid
A functional group consisting of a single bonded O between TWO carbons and double bonded O.
Named by counting the number of carbons on the =O side and changing the ending to “–oate”.
ethaneethanoateMethyl
You name the second half of the ester (side without =O) like a alkane branch ending in “–yl”
The Ester Functional Group
***Esters are often added to foods for artificial flavours.***
Making an Ester (Esterification)
***An Ester is formed when a carboxylic acid (COOH) reacts with an alcohol (COH) and undergoes a condensation reaction (dehydration).***
Butanoic AcidEthanol
H + OH HOH (Water)
Making an Ester (Esterification)
***An Ester is formed when a carboxylic acid (COOH) reacts with an alcohol (COH) and undergoes a condensation reaction (dehydration).***
butanoateEthy
l
+ H2O
Ester Formation Summary
CH3-C-OH
=O
+ HO-CH3
HOH
CH3-C- + O-CH3 CH3-C-
=
O
O-CH3
ethanoateMethyl
Esterification and Benzene Rings***Esterification when benzene rings have the required carboxylic acid and hydroxyl groups.***
Esterification and Benzene Rings***Esterification when benzene rings have the required carboxylic acid and hydroxyl groups.***
The common plastics around you are formed from single unit monomers linked together into longer chains called polymers.
PolymerMonomerMonomerMonomer
**Addition polymers form from alkene or alkyne monomers.**
Example 1: Polypropene (Propylene)
Propene monomer “sub” units
Again the joining of the monomers breaks the double bonds and connects the monomers together.
General Formula
Example 2: Polyvinyl Chloride
Viny chloride monomer “sub” units
Again the joining of the monomers breaks the double bonds and connects the monomers together.
General Formula
Example 3: Polystyrene
Styrene monomer “sub” units
Again the joining of the monomers breaks the double bonds and connects the monomers together.
General Formula(Styrofoam)
Example 4: Teflon
tetrafluoroethene monomer “sub” units
Again the joining of the monomers breaks the double bonds and connects the monomers together.
General Formula
Condensation polymers are made in a similar way to addition polymers as BOTH polymers are formed from monomer “sub” units.
***BUT, in condensation polymers the “sub” unit are alternating “double ended” carboxylic acids and alcohols forming “ester” linkages.***
OH-C-CH2-CH2-C-OH=
O
=
O
Butane-1,4-dicarboxylic acid
+OH-CH2-CH2-OH
Ethane-1,2-diol
***Just like in esterification, an HOH is removed when they join together***
OH-C-CH2-CH2-C-OH
=
O=
O
Butan-1,4-dicarboxylic acid
+OH-CH2-CH2-OH
Ethan-1,2-diol
HOH
OH-C-CH2-CH2-C-O -CH2-CH2-OH
O
=
-C-CH2-CH2-C-O-CH2-CH2-O-
n
+ HOH
***You ARE NOT expected to be able to name this***
General Formula
O
=
Example 1: Lipids
+ 3 Fatty Acids + 3 HOH
Example 1: Polyester (Synthetic Lipids)
OH-C-CH2-CH2-C-OH
O
=
O=
Butane-1,4-dicarboxylic acid
+OH-CH2-CH2-OH
Ethane-1,2-diol
→-OH-C-CH2-CH2-C-O-
O
=
O
=
CH2-CH2-
n
+ HOH
Example 2: Protein Synthesis( P + P = Amino)
N-CH2-C-OH
O=
(Acids)H
H Glycine(Amino Acid)
No need to memorize
+ N-CH-C-OHH
H CH3
O
=
Alanine(Amino Acid)
→ -N-CH2-C-O-
O
=
HN-CH-C-O-H CH3
O=
Protein Segment
+ HOH
Watern
n
**The bond between two amino acids is called a PEPTIDE bond**
Example 2: Nylon( Synthetic Amino Acids)The same as peptide bonding, EXCEPT no Amino Acids, just alternating “double ended” COOH (carboxylic acid) subunits and “double ended” NH2 (Nitryl) subunits”.
“Double Ended” COOH “Double Ended” NH2
→+ HOH
Watern
n
**The bond between two Nylon molecules is called a AMIDE bond**
Example 2: Kevlar( Synthetic Amino Acids)The same as peptide bonding, EXCEPT no Amino Acids, just alternating “double ended” COOH (carboxylic acid) subunits and “double ended” NH2 (Nitryl) subunits”. AND THERE IS HYDROGEN BONDING BETWEEN POLYMER CHAINS!
OH-C-
O=
-C-OH
O
=
“Double Ended” COOH
+ N- -NH
H
H
H“Double Ended” NH2
→ -C-
O
=
-C-
O
=
N- -N-H H
+ HOH
n
n
Example 2: Kevlar( Synthetic Amino Acids)
-C-
O
=-C-
O
=
N- -NH H
-C-
O
=
-C-
O
=
N- -NH H
-C-
O
=
-C-
O
=
N- -NH H
-C-
O
=
-C-
O
=
N- -NH H
****When multiple polymers line up they hydrogen bond to each other making the polymer even stronger.***