Question

Take Test: PQ 11.1 Allenes & Z:E – CHEM-301-009 (Fall 2020).pdf

In the blank, write an IUPAC name for the molecule pictured below, including stereochemical designation.

I just need helping with naming the structure on question one. I'm not sure how I'm naming it wrong. I was getting (E)-3-ethyl-2,6-dimethylhex-3-ene.

Answer 1

Name - (R)- 4-ethyl-5-methyl-2,3-hexadiene.
Naming explained in the image .

H₂ C. 5 2 c=c H CH2 CH3 TUPAC Name> (R)- 4-ethyl-5-methyl – 23-hexadiene Rules used- double boud is given the lowest numbering. с chain with largest number of aubsteituents ich preferred substituents are named in alphabetical order. for naming stereochemiestoy - ③ hec (=2=0 и? -CM₂ CH3 (2) since numbers are in clockwise direction, (R) desiquation is even [12, Clockwise ] suberule- substituent with largar number of carbons gets priority,