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Organic Chemistry

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30 Apr 2012 00:28:14 IST

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nomenclature of r ,s in cyclic compound

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ROHAN KUMAR

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3 May 2012 07:55:28 IST

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a atomic number more his priority} (b) in case of double bond assume it to be two elements like C=O can be assumed as C-2O (C)in case of same element go to another bonded element or group [2]now for finding 'R' or 'S' form take priority as 1,2,3and4.. [3]move your finger around the compound in the priority order 1,2to3 see whether it is clockwise or anticlockwise.. [4]now see what is the position of the 4th priority group (a) if it is down means south take clockwise as clockwise and anticlockwise as anticlockwise (b)otherwise take clockwise as anti clockwise and anticlockwise as clockwise {[5] and then take clockwise as 'R' FORM AND anticlockwise as 'S' FORM

ROHAN KUMAR

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3 May 2012 07:58:00 IST

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simple steps are as follows:[1]finding priority (a) by this rule ::GREATER THE atomic number more his priority} (b) in case of double bond assume it to be two elements like C=O can be assumed as C-2O (C)in case of same element go to another bonded element or group [2]now for finding 'R' or 'S' form take priority as 1,2,3and4.. [3]move your finger around the compound in the priority order 1,2to3 see whether it is clockwise or anticlockwise.. [4]now see what is the position of the 4th priority group

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