Carbon and it's compounds

Asked by  | 20th Jun, 2008, 11:58: AM

Expert Answer:

A standard procedure recommended by IUPAC is followed while naming of alkanes alkenes and alkynes.

For example in branced alkanes we follw this procedure:

  1. Find the longest chain of carbons in the molecule. The number of carbons in the longest chain becomes the parent name (refer to the standard table given in NCERT)
  2. After finding the parent chain, you number the parent chain starting with the end nearest the first substituent (a substituent is any fragment that juts off the main chain).
  3. Next, determine the names of all substituents. Substituents are named as if the piece were a separate molecule, except that the suffix of yl is used rather than ane. Thus, a two-carbon substituent would be an ethyl substituent (not an ethane substituent).
  4. Put the substituents in alphabetical order (ie. ethyl before methyl) in front of the parent name.
  5. Next, identify the positions of all substituents in the name by placing the carbon number where the substituent attaches to the parent chain in front of it. For example, 2-methylheptane indicates that a methyl substituent is attached to the num

For further clarifications please post the problems individually.

Answered by  | 28th Jun, 2008, 11:21: AM

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