Question

Consider R and S configuration

Give IUPAC names for the following compounds. ball & stick labels

Answer 1

The structure of the compound is :- 2 H The compound has OH A no chiral centre ca . ( carbon with all CH3 a 2 different groups). So No R ors configuration needed here. Name of side chain = isopropane or i'- Miethyl ethyl Name of functional group OH (Alcohol) Numbering should be done in such a way that functional groups get lowest position. cyclic chain with six membered ring is parent chain here. TUPAC name of functional group (OH) - ol.

Naming should be done in ordering Pacfix + cydo a parent chain carbons i + ane, ene/yne + functional : for --=,= : group. O bonds gf prefix has caubon atoms, yl is added .. at the end of its name. Name of compound is: - 4- Isopropyl cydohexan-l-el. I UPAC name of the compound :- 4-61- Metylethyl) cyclohexan-t-el. Structure of the compound :- OH molecule has no Symmetric elements So chirality and optical activity is present

Determining R8 S configuration :- Priorities are given according to Increasing number of molecular weight of directly attached atoms to Chiral carbon. Nous count 1>2-3 It is moving G mti clockwise. So S. But lowest priority grous CH is above the blome. The configuration get reversed to R. :. I OH OH! Priorities are given according to high to low atomic weights of atoms. If directly attached atoms are bome, then look the moleculeio weight of meat atom and give priorities orders. Now count, 2 3 . It is R now.

H O OH Numbering is given - H CH Name of forefix Methyl. Nome of parent chain = cyclohexane. Name of functional group + OH - -- OL Tupac name of the compound : CIR, 3R)- 3-Methylcydohexan-1-ol. R$ S configuration are written in brackets with position at starting of nome. (Plz don't dislike)