AN INTRODUCTION TO ORGANIC COMPOUNDS Notes

21 step 4 cite the positions and names in

This preview shows 6 out of 9 pages.

21 Step 4 : Cite the positions and names in alphabetical order of the substituents along the longest continuous chain. The prefixes "di", "tri", "tetra", are not considered in determining the alphabetical order of the substituents. Use hyphens to separate the various prefixes and commas to separate numbers. Examples: Cycloalkanes Molecular formula : C n H 2n n=3, 4, .... Nomenclature : 1. Add prefix “cyclo-” to the name of the parent alkane. 2. There is no need to number the position of a single substituent (ex: methylcyclohexane).
Image of page 6

Subscribe to view the full document.

22 3. For cycloalkanes containing two substituents, they are cited in alphabetic order and position 1 is given to the first cited substituent. 4. For more than two substituents, number the ring carbons in the direction that gives the lowest possible numbers for the substituents. Nomenclature of alkyl halides Common names : cite the name of the alkyl group followed by the name of the halogen (ex: methyl iodide). IUPAC nomenclature : alkyl halides are named as substituted alkanes. Number the chain from the end nearer the first substituent, regardless of whether its alkyl or halo (prefix names: fluoro , chloro , bromo , iodo ).
Image of page 7
23 Nomenclature of ethers Common names : give the name of the two alkyl substituents (alphabetically) followed by the word ether .
Image of page 8

Subscribe to view the full document.

Image of page 9
You've reached the end of this preview.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern