Why are there only 3 isomers of pentane? Why doesn't butyne have cis and trans isomers? Why is there no such thing as 3-butyne?
25 For the following pairs of compounds, indicate if they are cis-trans isomers or the same compound. If they are cis-trans isomers, indicate which is the cis isomer and which is the trans isomer and explain why. a. and b. and and
Which of the following pairs are cis-trans isomers? Select all the pairs that are cis-trans isomers.
2. Which of the following compounds exhibit cis/trans Isomer CIS and transforms of the compounds that do exhibit Isomers s exhibit cis/trans isomerism? Explain why. Draw the a) Methylcyclobutane b) 3-ethyl-3-hexene c) 1-ethyl-3-methylcyclopentane d) 2,3-dimethylpentane e) 2,3-dichloro-2-hexene f) 2-butyne
2. Draw the structures of the cis-trans isomers for each compound. Label them cis and trans. If no cis-trans isomers exist, write none. a. 2,3-dimethyl-2-pentene b. 1,1-dimethyl-2-ethylcyclopropane c. 1,2-dimethylcyclohexane d. 5-methyl-2-hexene e. 1,2,3-trimethylcyclopropane
PART B: Cyclohexane Procedures: 1. Make a model of cis-1,2-dimethylcyclohexane and trans-1,2-dimethylcyclohexane. Do a ring flip of both *Draw the two conformation of the cis and trans cyclohexane structures above *List the number of axial and equatorial substituents for both the cis and trans *Which isomer is more stable overall, cis or trans? Why? 2. Make a model cis-1,3-dimethylcyclohexane and trans-1,3-dimethylcyclohexane. Do a ring flip *Draw the two conformation of the cis and trans cyclohexane structures above *List the number...
12. You are given a sample that is believed to be either cis-
or trans-cinnamic acid. Would TLC be a good method to determine
which compound you have? Why or why not? See structures
arom COOH (A) trans-cinnamic acid (B) cis-cinnamic acid
12. You are given a sample that is believed to be either cis-or trans cinnamic acid. Would TLC be a good method to determine which compound you have? Why or why not? See structures attached COOH OH (A) trans-cinnamic acid (B) cis-cinnamic acid
(1). Why are cis and trans isomers of succinic acid impossible? (2). Define isomerization. (3). What must happen during isomerization?
HI. Can someone please differentiate the two NMR of cis and
trans Nepetalactone? Like where are the sp2 hybridized C-Hs and all
other aspects of NMR. I labeled all the C's and H's from the
structure but can't differentiate between cis and trans
Nepetalactone. It includes both 1H and 13C NMR. Thanks in
advance.
Cis-Nepetalactone O He 7 10 4 8 9 462626* “64626. 48 44 44 42 40.- 4双3.o 2* 24 24 22 20 ,8 16 '4 1.2 Trans-Nepetalactone...