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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: manchester united on May 02, 2008, 07:01:57 PM

Title: simple CIP stereocenter configuration question
Post by: manchester united on May 02, 2008, 07:01:57 PM

when determining R/S at stereocenter, if you had a amine group (directly attached) and a amide group attached for example, am i right in saying that amine takes priority as nitrogen is higher atomic number + is directly attached whereas amide group begins with carbon (lower atomic number than nitrogen).

Title: Re: simple CIP stereocenter configuration question
Post by: macman104 on May 02, 2008, 07:06:22 PM

Yes, the amine would take precedence over the amide.

EDIT:  I wanted to add, yes, the amine takes precedence for the reason you state.  The nitrogen > than the amide carbon.