Draw the product(s) produced (only constitutional isomers, disregard stereoisomers) when the following substances are treated with NBS and heat. Marks will be removed for drawing the same structure more than once a) b)
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- Name attached compound and decide which stereoisomer will react faster inan E2 elimination reaction. Explain your choice.1. Draw the organic product (ignoring stereochemistry) 2. State whether the process is overall oxidation, overall reduction, or neither.The attached isomerization reaction, drawn using D-glucose as startingmaterial, occurs with all aldohexoses in the presence of base. Draw astepwise mechanism that illustrates how each compound is formed.
- Identify F in the following reaction sequence. F was converted in several steps to the antidepressant paroxetine (trade name Paxil; see also Problem 9.9).Devise a synthesis of X from the given starting materials. You may useany organic or inorganic reagents. Account for the stereochemistryobserved in X.Interestingly, reduction of the complex shown above mostly gives thealcohol enantiomer shown below after workup. a. Draw the other minor diastereomeric alcohol product. b. Briefly explain the diastereoselectivity of the reduction – why is oneenantiomer heavily favored? Draw a structure or structures to support youranswer.
- a) Draw the mechanism, using good curved arrow notation, for the reaction of 2-methyl-2- butene with bromine in water, omitting any stereochemistry: b) (R)-3-butyn-2-ol is treated with 2 mol of HBr, yielding optically active Compound A (C4H8OBr2). Draw the structure of the reaction with the correct stereochemistry. c) Name Compound A above, including stereochemistry. d) Compound A is treated with HBr to yield Compound B (C4H7Br3). The resulting solution is optically inactive. Draw the product(s) obtained and explain why there is a loss in optical activity.(R)-Carvone, the major component of the oil of spearmint, undergoesacid-catalyzed isomerization to carvacrol, a major component of the oilof thyme. Draw a stepwise mechanism and explain why thisisomerization occurs.In addition to organic halides, alkyl tosylates react with organocuprates (R2CuLi) to form coupling products R–R′. When 2° alkyl tosylates are used as starting materials (R2CHOTs), inversion of the configuration at a stereogenic center results. Keeping this in mind, draw the product formed when each compound is treated with (CH3)2CuLi.
- Name the type of reaction and provide a possible reagent assign all the stereocentres found in the compounds via cahn ingold prelog rules define the relation between compound. D E F G identify the 2 stereoisomers likely to be formed in compound cDraw the product formed (including stereochemistry) in attached pericyclicreaction.Draw the products of attached reaction carried out under high-dilution conditions. Indicate the stereochemistry at all stereogenic centers