Organic ChemistryBrief Course
Organic ChemistryBrief Course CHEM 231
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This 2 page Class Notes was uploaded by Rosendo Conn on Saturday September 12, 2015. The Class Notes belongs to CHEM 231 at West Virginia University taught by Staff in Fall. Since its upload, it has received 5 views. For similar materials see /class/202840/chem-231-west-virginia-university in Chemistry at West Virginia University.
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Date Created: 09/12/15
Chem 231 Chapter 2 Handout Alkyl Substituents 1R 1 obtained from alkane by removal of H 2 attached as side group to carbon backbone and substitutes for a H 3 parent alkane ane ending becomes yl EX pentane becomes pentyl Alkyl Substituent 1R m 39 CH3 or 39 Me methyl 39 CHZCH3 or Et ethyl 39 CHZCHZCH3 or 39 Pr propyl CH3CHCH3 or z39Pr isopropyl 39 CHZCHZCHZCH3 butyl CH3CHCH2CH3 secbutyl or s butyl CH32CHCH239 isobutyl CH33C39 tartbutyl or t butyl Nomenclature of Alkanes IUPAC Rules Summarized 1 Find longest continuous carbon chain and name as alkane If two equal length chains are present choose the chain with most branches ie smallest side groups NOTE Eventually will learn that alkane ane ending will change according to presence of speci c lnctional group EX hexm becomes hexan0l if alcoh0l lnctional group is present 2 Name substituents 3 Number substituents Place number in front of substituent name separated by a dash NOTE First number carbons in longest chain such that rst substituent has lowest number Second and if two substituents have same lowest number number from end that gives lowest set of integers lowest integer sum 4 Add Greek pre xes di tri tetra penta to substituent name indicating how many of each substituent present 5 List substituents in alphabetical order followed by alkane name Do not include Greek pre xes di tri etc and sectert designations in alphabetization Numbers are separated with commas numbers and names are separated with dashes
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