In case only a non terminal functional group or a substituent group is present in the parent chain, the numbering should start in such a way that the substituent or the non terminal func. group gets the lowest possible number. Is this statement completely correct?

Asked by Aradhana Goswami | 20th Feb, 2014, 09:53: PM

Expert Answer:

When a non-terminal functional group or a substituent group is present in the parent chain, the numbering should start in such a way that the non-terminal functional group (for example, ketone) should get the lowest possible  number followed by the substituent.
For example, 3-methyl-2-butanone. In this compound the numbering will start in such a way that, fuctional group shouls get the nlowest possible number which is 2 in this case followed by the substituent group which is methyl will get the next lowest possible number.

Answered by  | 21st Feb, 2014, 11:45: AM

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