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Portmess Homework Solutions 36

Portmess Homework Solutions 36 - 30 ALKANES There is one...

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There is one isomer characterized by an ethyl substituent on a fi ve-carbon chain: The remaining isomer has three methyl substituents attached to a four-carbon chain. 2.17 In the course of doing this problem, you will write and name the 17 alkanes that, in addition to oc- tane, CH 3 (CH 2 ) 6 CH 3 , comprise the 18 constitutional isomers of C 8 H 18 . ( a ) The easiest way to attack this part of the exercise is to draw a bond-line depiction of heptane and add a methyl branch to the various positions. Other structures bearing a continuous chain of seven carbons would be duplicates of these isomers rather than unique isomers. 5-Methylheptane, for example, is an incorrect name for 3-methylheptane, and
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