Nomenclature for Organic Molecules CHEM135 fall 2007

Nomenclature for Organic Molecules CHEM135 fall 2007 -...

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Unformatted text preview: Nomenclature for Organic Molecules (for CHEM135 fall 2007/Johnson) Identify the Principal Group. Determine the longest carbon chain or ring size to identify the carbon root name (C root). Name the substituents and locate on chain, numbering the chain nearest the substituents. Assign stereochemistry as appropriate. Follow rules below. Group Example IUPAC Name Common Name General Formula Principal Group General Naming Rule Alkane C n H 2n+2 Ethane Ethane RH C-H and C-C bonds (C root )ane Alkene C n H 2n Ethene or Ethylene Ethylene RCH=CH 2 RCH=CHR R 2 C=CHR R 2 C=CR 2 (C root )ene Alkyne C n H 2n-2 Ethyne or Acetylene Acetylene (C root )yne Arene Benzene Benzene ArH Aromatic Ring Haloalkane Bromoethane Ethyl bromide RX ( hal root )o( C root )ane Alcohol Ethanol Ethyl alcohol ROH ( C root )anol Ether Methoxymethane* *dont need to name Dimethyl ether ROR / ( C root )oxy( C / root ) Amine Methanamine *dont need to name Methylamine RNH 2 RNHR RNR 2 ( C root )amine Aldehyde Ethanal* *(dont need to name...
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Nomenclature for Organic Molecules CHEM135 fall 2007 -...

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