Question

Problem 4 Give the IUPAC name for each Newman projection. the folle eniwoll ot orl broo 6lumol be F ormula CH (H3C)2HC CHз CH(CH9CHIC CH CH HаС CH(CH2CH2CH3)CH3 CH3

Answer 1

Rules for IUPAC nomenclature selection of carbon chain: select the longest carbon chain which includes primary functional group with more substituents If a double or triple bond is present, the parent chain must contain it Numbering numbering would starts from primary functional group if no primary functional group beginning at the end nearer the first substituent, If a double or triple bond is present in parent chain numbering begin at the end nearer the double or triple bond Naming: Name all the substituents and list them in alphabetical order when writing the name If more than one of the same kind of substituents (whether it is alkyl or halo), number each and use one in the prefixes di-, tri-, tetra-, and so on CIP rules Find out the chiral center and give priority to the all atoms attached to chiral center based on atomic number Hold the molecule in space so that the lowest priority group (4) is directed away from you. and The three remaining groups(1,2,3) project towards you. If the three groups projecting toward you are ordered from highest priority (1) to lowest priority (3) if it is clockwise, then the configuration is "R", if it is anticlockwise then the configuration is "S" Hold the molecule in space so that the lowest priority group (4) is towards to you. and The three remaining groups(1,2,3) away from you. If the three groups projecting away from you are ordered from highest priority (1) to lowest priority (3) if it is clockwise, then the configuration is "S", if it is anticlockwise then the configuration is "R"

Problem 4 Give the IUPAC name for each Newman projection. (HỤC HC C H, HOHOHE 70 HC C HCH,CH,CH, JCH, CHE (4R)-4-fluoro-2,3,3,4,5-pentamethyloctane