9. Use the Cahn-Ingold-Prelog rules to choose the correct priority sequence for the assignment of the absolute configuration of the following compound and hence assign the absolute configuration. A -CI > - CH2CHO > -CSH5 > -CH2CH3: R - Cl > - CH2CHO > -CSH5 > - CH2CH3: S - Cl > -CSH5 > - CH2CHO >- CH2CH3: R OHC. 3 D - Cl > -CSH5 > - CH2CHO > - CH2CH3: S E - CH2CHO > -CsH5 > - Cl > - CH2CH3: R F -CH2CHO > - CI>-CSH5 > - CH2CH3: S G None of the above.

9. Use the Cahn-Ingold-Prelog rules to choose the correct priority sequence for the assignment of the absolute configuration of the following compound and hence assign the absolute configuration. A -CI > - CH2CHO > -CSH5 > -CH2CH3: R - Cl > - CH2CHO > -CSH5 > - CH2CH3: S - Cl > -CSH5 > - CH2CHO >- CH2CH3: R OHC. 3 D - Cl > -CSH5 > - CH2CHO > - CH2CH3: S E - CH2CHO > -CsH5 > - Cl > - CH2CH3: R F -CH2CHO > - CI>-CSH5 > - CH2CH3: S G None of the above.

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

ChapterL4: Proton (1h) Nmr Spectroscopy

Section: Chapter Questions

Problem 4E

See similar textbooks

Similar questions

Long-range coupling between protons more than two carbon atoms apart is sometimes observed when bonds intervene. An example is found in 1-methoxy-l-buten-3-yne. Not only does the acetylenic proton, Î—a, couple with the vinylic proton Hb, it also couples with the vinylic proton Hc, four carbon atoms away. The data are: Construct tree diagrams that account for the observed splitting patterns of Î—a, Hb, and Hc.
Rank the following groups in order of decreasing priority according to the Cahn-Ingold-Prelog system. I) -CH=CH2 II) -CH3 III) -CH IV) -OH 1) IV > III > I > II 2) IV > I > III > II 3) III > IV > I > II 4) II > I > III > IV
Designate homotopic, enantiotopic, or diastereotopic for the hydrogens present in the molecules below
I am having trouble with the park where we determine what kind of peak each group of H's are. I am confused about counting nieghbors. Do I count every carbon thats right next to each carbon , how far do I count? Like for the group I that I marked with purple, I counted 3 adjacent carbons, but it says its a triplet. And the one labeled as a nonet ( 9 peaks ) , I dont understand where 9 came from. Can someone explain how to correctly count neighbors?
Order the following substituents from highest priority to lowest priority: CH3, OH, H,F. Use the Cahn-Ingold-Prelog priority system. a. F, CH3, OH, H b. H, CH3, F, OH c. F, OH, CH3, H d. H, CH3, OH, F
please help me with also using correct sig figs and labelling units. #2
In each case, assign the correct configuration of R or S, 1 is highest priority, 4 is lowest priority.
Which combination cannot be used as mobile phase in RPLC? A. Water-acetonitrile B. Acetonitrile-cyclopentane C. water-THF (tetrahydrofuran) D. Acetonitrile-THF (tetrahydrofuran)
For conjugated C=C with carbonyl group or another double bond, lower frequency for vibration and lower force constant is needed? Why?
Match the chromophore with the appropriate transition Choose: only in carbonyl group, 2 saturated hydrocarbons in alkane, or carbonyl group and ethene n to p* transition: ? sigma to sigma* transition: ? p to p* transition: ?
Which of the following groups has the highest priority according to the Cahn-Ingold-Prelog sequence rules? a. CH2Cl b. CHO c. CH2OH d. CH3
The mass spectrum of 1-ethyl-1-methylcyclohexane shows many fragments, with two in very large abundance. Kne appears af m/z=111 and the other appears at m/z=97. Identify the structure of each of these fragments.