University:
Kentucky State University
Course:
CHE 301 | Organic Chemistry I
Academic year:

2024
Views:

464

Pages:

5
Author:

rezancuk2j

Chapter 2 - alkanes and cycloalkanes No. _____ Hydrocarbons 4-6 bonds around C sp³ hybridized C Acyclic → CnH2n+2 (saturated) Cyclic → 2H - - - - - - - Nomenclature IUPAC rules Table 2.1 [Hand drawn skeletal structure of butane] * Butane * no. of Functional atoms group [Hand drawn skeletal structure of 2-methylpentane with numbers ] Choose the longest chain numbering Substituents Writing the name Start numbering from the atom closer to substituent. 2-methylpentane [Hand drawn skeletal structure of 2-bromo-5-chlorohexane with numbering] (alphabetical order) * No. ______ [Hand drawn skeletal structure of 2,4-dimethylhexane with numbering] First Substiutent Start numbering from the end nearer to the first substituent. If we get equal numbers on the first substituent, then we look to the second substituent. 2,4-dimethylhexane [Hand drawn skeletal structure of 5-bromo-2-chloro-3-methylhexane with numbering] The second substituent must take the smallest number. 5-bromo-2-chloro-3-methylhexane [Hand drawn skeletal structure of 3-ethyl-2-methylpentane with numbering] If all chains are of the same length, 3-ethyl-2-methylpentane. Common names CH₃Cl IUPAC → chloromethane common → methyl chloride CH₂Cl₂ IUPAC → dichloromethane common → methylene chloride CHCl₃ IUPAC → trichloromethane common → chloroform CCl₄ carbon tetrachloride CH₃CH₂CH₂Cl IUPAC → 1-chloropropane common → n-propyl (normal)

Chapter 2 Alkunes and Cycloalkunes

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