Give the IUPAC name for the following compound. A. (Z)-2, 3, 6-trimethyl-2-hepte

Question

Give the IUPAC name for the following compound. A. (Z)-2, 3, 6-trimethyl-2-heptene B. (Z)-2, 3, 6-trimethyl-3-heptene C. (E)-2, 3, 6-trimethyl-3-heptene D. (E)-2, 3, 6-trimethyl-2-heptene E. (E)-2, 4, 6-trimethyI-3-heptene Which of the following statements is (are) true about compound A? A. Compound A is a trans alkene. B. Compound A is an E alkene. C. Compound A is a cis alkene. D. Both (Compound A is a trans alkene) and (Compound A is an E alkene) are true. E. Both (Compound A is an E alkene) and (Compound A is a cis alkene) are true.

Explanation / Answer

1. according to IUPAC,

word root = indicates no of carbons in longest chain (7) = hept

primary suffix = indicates sturated/unsaturated = ene

secondary suffix = indicates functional group = no

primary prefix = indicates cyclic compounds = no

secondary prefix = indicates substituent = 2,3,6-trimethyl

so that , name of the molecule (S.Preffix)(P.preffix)(WordRoot)(P.suffix)(S.suffix)

name: E-2,3,6-trimethyl-2-heptene

answer:C

2. answer: D ( same groups are opposite in direction,so that it is trans)

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