a)
Interpretation:
How to carry out the transformation shown is to be stated.
Concept introduction:
The double bonds in the side chain can be reduced without affecting those in the
To state:
How to carry out the transformation shown.
b)
Interpretation:
How to carry out the transformation shown is to be stated.
Concept introduction:
The
To state:
How to carry out the transformation shown.
c)
Interpretation:
How to carry out the transformation shown is to be stated.
Concept introduction:
The carboxylic acid or ester or the carbonyl group in aldehydes and ketones can be reduced without affecting the double bonds in the side chain and in the aromatic ring using LiAlH4 in ether. The alcohol can be converted in to a bromide by treating with PBr3. The bromo compound when treated with NaSH will yield the thiol required,
To state:
How to carry out the transformation shown.
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Chapter 17 Solutions
Organic Chemistry
- a) How would you synthesize the following compounds from cyclohexanone? b) CO₂Harrow_forwardThe reaction of an alkene with diazomethane forms a cyclopropane ring. Propose a mechanism for the reaction.arrow_forwardNonconjugated , -unsaturated ketones, such as 3-cyclohexenone, are in an acid-catalyzed equilibrium with their conjugated , -unsaturated isomers. Propose a mechanism for this isomerization.arrow_forward
- A step in a synthesis of PGE1 (prostaglandin E1, alprostadil) is the reaction of a trisubstituted cyclohexene with bromine to form a bromolactone. Propose a mechanism for formation of this bromolactone and account for the observed stereochemistry of each substituent on the cyclohexane ring. Alprostadil is used as a temporary therapy for infants born with congenital heart defects that restrict pulmonary blood flow. It brings about dilation of the ductus arteriosus, which in turn increases blood flow in the lungs and blood oxygenation.arrow_forwardShow how the following compound can be synthesized from benzene:arrow_forwardWhen pent-1-ene is treated with mercury(II) acetate in methanol and the resulting product is reacted with NaBH4, what is the primary organic compound which results? 1-ethoxypentane 1-methoxypentane 3-ethoxypentane 2-ethoxypentane 2-methoxypentanearrow_forward
- Synthesize the product shown from the starting materials, including intermediates formed at each steparrow_forward5) Provide the products necessary to complete the synthesis below. Indicate what mechanism was used for each product. OH PB13 Но heatarrow_forwardWnte reaction schemes (no mechanism required) to show how the followin transformations can be effected CHO 2.arrow_forward
- Cyclohexene can be converted to 1-cyclopentenecarbaldehyde by the following series of reactions. Propose a structural formula for each intermediate compound.arrow_forwardAll rearrangements we have discussed so far have involved generation of an electron-deficient carbon followed by a 1,2-shift of an atom or a group of atoms from an adjacent atom to the electron-deficient carbon. Rearrangements by a 1,2-shift can also occur following the generation of an electron-deficient oxygen. Propose a mechanism for the acid-catalyzed rearrangement of cumene hydroperoxide to phenol and acetone.arrow_forwardAcid-catalyzed hydrolysis of the following epoxide gives a trans diol. Of the two possible trans diols, only one is formed. How do you account for this stereoselectivity?arrow_forward
- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning