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- Predict the product(s) and provide the complete mechanism for each reaction below.Draw the structure of the major product of each reaction (If a racemic mixture is formed, indicate both enantiomers), and show the mechanismTreatment of W with CH3Li, followed by CH3I, affords compound Y (C7H14O) as the major product. Y shows a strong absorption in its IR spectrum at 1713 cm−1, and its 1H NMR spectrum is given below, (a) Propose a structure for Y. (b) Draw a stepwise mechanism for the conversion of W to Y.
- Show how H may be converted into G and I. For both sequences, provide reagents and the structure and stereochemistry of any intermediate compounds.Synthesize the followingDraw the structure of the major product of each reaction (If a racemic mixture is formed, indicate both enantiomers), and show the mechanism
- When treated with NaOH, the bromide below gives an alkene by the E2 mechanism, by eliminationof the circled atoms: (a) Draw the Newman projection from which elimination takes place. (b) Draw the mechanism. (c) Draw the product with the proper stereochemistry. (d) Assign the proper stereochemical descriptor to the product. (Z, E? Trans,CiS?) (e)What would happen to the stereochemistry of the product if the enantiomer of the starting material were used inthe reaction?When attached halohydrin is treated with NaH, a product of molecular formula C4H8O is formed. Draw the structure of the product and indicateits stereochemistry.When a 2, 6-disubstituted allyl phenyl ether is heated in an attempted Claisen rearrangement, migration occurs to give the p-allyl product as the result of two sequential pericyclic reactions. Explain.
- Predict the product(s) and provide the mechanism for each two-step process below.Acid-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?Treatment of an , -unsaturated ketone with basic aqueous hydrogen peroxide yields an epoxy ketone. The reaction is specific to unsaturated ketones; isolated alkene double bonds do not react. Propose a mechanism.