Concept explainers
Interpretation: For the given reaction, structures of compounds A, B, C, and D need to be drawn.
Concept Introduction: Grignard reagent can act as a strong base as well as a strong nucleophile. The nature of the reaction depends on the reactant that is if the possibility of an attack of nucleophile or elimination is more. In the case of
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ORGANIC CHEMISTRY LL PRINT UPGRADE
- Rank the following compounds in order of increasing reactivity in nucleophilic addition.arrow_forwardThe compound eutypine is an antibacterial agent isolated from the fungus Eutypa lata. This fungus results in a disease common to vineyards called eutyposis. Give a sequence of reactions that will take the following reactant and give eutypine when the other reactants used in the sequence are acetylene and acetone.arrow_forwardNicotinic acid, more commonly named niacin, is one of the B vitamins. Show how nicotinic acid can be converted to (a) ethyl nicotinate and then to (b) nicotinamide.arrow_forward
- Minoxidil is a molecule that causes hair growth in some people. It was originally synthesized as a vasodilator for the treatment of hypertension (high blood pressure). Most of the patients taking the drug for hypertension were seen to grow body hair. Due to other side effects, its oral use was stopped, but it became popular as a topical cream to promote hair growth. The first key reaction in one synthesis of minoxidil follows. Draw the product of this reaction.arrow_forwardTamoxifen is a drug used in the treatment of breast cancer. How would you prepare tamoxifen from benzene, the following ketone, and any other reagents needed?arrow_forwardThe analgesic naproxen can be prepared by a stepwise reaction sequence from ester A. Using enolate alkylation in one step, what reagents are needed to convert A to naproxen? Write the structure of each intermediate. Explain why a racemic product is formed.arrow_forward
- The following intermediate was needed for the synthesis of tamoxifen, a widely used antiestrogen drug for treating estrogen-dependent cancers such as breast and ovarian cancer. Needed for the (A) synthesis of tamoxifen Propose a synthesis for this intermediate from compound A.arrow_forwardAcetanilide is less reactive than aniline toward eletrophilic substitution. Explain.arrow_forwardDraw a stepwise mechanism for the formation of A from an alcohol and acid chloride. A was converted in one step to blattellaquinone, the sex pheromone of the female German cockroach, Blattella germanica.arrow_forward
- 17.36 Tamoxifen is an estrogen receptor modulator that is used in the treatment of breast cancer. Provide the missing reagents and the structure of compound A in the synthesis of tamoxifen. Page 707 HO (CH3)2N 1. C,H,MgBr 2. H + Compound A (CH3)2N Tamoxifenarrow_forwardWe have seen that the alpha carbon atom of an enamine can function as a nucleophile in a Michael reaction, and in fact, enamines can function as nucleophiles in a wide variety of reactions. For example, an enamine will undergo alkylation when treated with an alkyl halide. Draw the structure of intermediate A and the alkylation product B in the following reaction scheme (J. Am. Chem. Soc. 1954, 76, 2029-2030): TSOH -H₂O NH A 1) CHgI 2) H₂O+ B + NH Modify the given copy of the starting material to draw compound A. If needed, use the single bond tool to interconvert between double and single bonds. Edit Drawingarrow_forwardDevise a synthesis of compound A from the given starting materials. You may use any other inorganic reagents or organic alcohols. A was used to prepare aliskiren, a drug used to treat hypertension (see also Problem 5.7). CH,0 NH2 OH но. CHO Br CH,0. H2N. CH;0 CH30 A CH,0 Br Br aliskirenarrow_forward
- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning