Question

1. Write IUPAC name of the following compounds? Include their stereochemistry (E, Z or cis-trans) in their names.

Answer 1

Tas var highest numbes of chain will get numbering. the double band 1,2 Y won't classify as a Elzor - cis trans because it has same substituent on one siche the double bend on (4,5) according to priority it i is classified as a Z alkene. 24 d On 3rd carbon ethyl group is attached & on 5th carbon methyl group is attached Alphabatically e comes first than m hence the nomenclature is

(3-ethyl 5-methyl) hepta 1,402) diene. 1. Methyl is in 4th position. & double band iq in first position. Hence IUPAC Name if su prame ir (4-methyl- Egelo hex-l-ene.) 7 L 4 ñ (: His other substituent hence it get 2nd priority on and carbon according to psiosity itin e alkene. м «M Casbом. according to priority itis Zalkene. TUPAC :- (26,67 ) - octadiene. Name

on 1st carbon according to ř priority it is E alkene methyl subsituent is in and or 3rd position. Hence IUPAC Name is 2,3 dimethyl (1 E) cyclohexene.