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- Complete the following reactions and indicate thestereochemistry of the product(s):Give the structure of the possible clasein condensation product from the following reaction. Tell which ,if any you would expect to predominate in each case. (a)CH3CO2Et+CH3CH2CO2Et (b)C6H6CO2Et + C6H5CH2CO2Et (c)EtOCO2Et +Cyclohexanones (d)C6H5CHo +CH3CO2EtName the structure. Heating compound A in the presence of H2SO4 results in which product?
- Friedel–Crafts alkylation of benzene with (R)-2-chlorobutane and AlCl3 affords sec-butylbenzene.a. How many stereogenic centers are present in the product?b. Would you expect the product to exhibit optical activity? Explain, with reference to the mechanism.Explain the E2 mechanism (bimolecular elimination) of of Elimination ?Stereoisomers of α-bromocinnamic acid: draw the reaction mechiansim with arows for the dehydrobromination of 2,3-dibromo-3-phenylpropanoic acid with ethanol and KOH to produce (Z)-α-bromocinnamic acid and (E)-α-bromocinnamic acid. Also draw the transition state for The (Z)-isomer syn-periplanar transition state and anti-periplanar transition state of the (E)-isomer.
- The (+) - aureol is a natural product that has shown selective activity against certain colon and lung cancer cell lines. It is postulated that a key step in the biosynthesis of this substance is the conversion of carbocation A into B. Propose a possible mechanism for this transformation (MUST show the corresponding arrows).Drawing an SN2 product with More Complex Reactants Identify C, the product of an SN2 reaction in the synthesis of raloxifene, a drug used to reduce the risk of invasive breast cancer in postmenopausal women.Consider the following chemical transformation:The transformation takes place via twosequential pericyclic reactions. Identify the two reactions and give a critical explanationwhether the reactions are allowable.