Molecular distances are usually given in nanometers (1 nm = 1 × 10 –9 m ) or in picometers (1 pm = 1 × 10 –12 m). However, the angstrom (Å) unit is sometimes used, where 1 Å = 1 × 10 –10 m. (The angstrom unit is not an SI unit.) If the distances between the Pt atom and the N atom in the cancer chemotherapy drug cisplatin is 1.97 Å, What is this distances in nanometers? In picometers?
Molecular distances are usually given in nanometers (1 nm = 1 × 10 –9 m ) or in picometers (1 pm = 1 × 10 –12 m). However, the angstrom (Å) unit is sometimes used, where 1 Å = 1 × 10 –10 m. (The angstrom unit is not an SI unit.) If the distances between the Pt atom and the N atom in the cancer chemotherapy drug cisplatin is 1.97 Å, What is this distances in nanometers? In picometers?
Solution Summary: The author explains the process of using units to guide a calculation called dimensional analysis.
Molecular distances are usually given in nanometers (1 nm = 1
×
10–9 m) or in picometers (1 pm = 1
×
10–12 m). However, the angstrom (Å) unit is sometimes used, where 1 Å = 1
×
10–10 m. (The angstrom unit is not an SI unit.) If the distances between the Pt atom and the N atom in the cancer chemotherapy drug cisplatin is 1.97 Å, What is this distances in nanometers? In picometers?
Wintergreen from Aspirin:
1. In isolating the salicylic acid, why is it important to press out as much of the water as possible?
2. Write the mechanism of the esterification reaction you did.
3.
What characteristic absorption band changes would you expect in the IR spectrum on going from aspirin to salicyclic acid and
then to methyl salicylate as you did in the experiment today? Give approximate wavenumbers associated with each functional
group change.
What signals appeared/disappeared/shifted that indicate that you have your intended product and not starting material? What
other impurities are present in your product and how do you know?
Synthesis of ZybanⓇ:
1. Write a mechanism for the bromination of m-chloropropiophenone.
Br₂
CH2Cl2
Cl
Br
2. Give the expected m/z (to a round number) for the molecular ion from the product above (including isotopic peaks).
3. What signals appeared/disappeared/shifted that indicate that you have your intended product and not starting material? What
other impurities are present in your product and how do you know?
Synthesis of Ibuprofen-Part 2:
1. Some pain relievers including ibuprofen (MotrinⓇ) and naproxen (Aleve®) are "α-arylpropanoic acids." Look up the structure
of naproxen (AleveⓇ), another a-arylpropionic acid. Using the same reactions that we used for making ibuprofen, show how
to make naproxen from the compound below. Show all intermediates and reagents in your synthesis.
Show how you would prepare ibuprofen starting from p-isobutylbenzene rather than p-isobutylacetophenenone. What reaction
steps would need to change/add?
3. What signals appeared/disappeared/shifted that indicate that you have your intended product and not starting material? What
other impurities are present in your product and how do you know?
Chapter 1 Solutions
OWLv2 6-Months Printed Access Card for Kotz/Treichel/Townsend's Chemistry & Chemical Reactivity, 9th, 9th Edition
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