Reaction of the cyclic product with a nitron (see below) yields a mixture of heterocyclic Điastereomers. ND NO, ) Name the reaction g) Draw one of the diastereomers. h) Show the orbital interaction and explain all aspects of stereoselectivity for the diastereomer that you selected. cou
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- The cycloaddition of 2-methylfuran and the unsaturated lactam (see below) yields up to 4 regioisomeric and diastereomeric products, all chiral and racemic. + N-Ph CH3 a) Draw the structure of the 4 possible regio- and diastereomers of this reaction. b) Which compound will be the major product obtained? Explain your answer based on effects of primary and secondary orbital interactions. O 4 possible regio- and diastereomers 80 °CReaction of the cyclic product with a nitron (see below) yields a mixture of heterocyclic Diastereomers. ND +. NO, ) Name the reaction g) Draw one of the diastereomers. h) Show the orbital interaction and explain all aspects of stereoselectivity for the diastereomer that you selected.A E OH OH H This is a(n) OH R B F PCC, CH₂Cl₂ H type reaction. The major product if R = CH₂CH3 is compound The major product if R = H is compound G Look at the given reaction and use the letter code corresponding to each compound in the blank to indicate the expected product(s), or fill in the blank with the appropriate vocabulary word or phrase. If a specific stereoisomer (e.g single enantiomer) is formed, select that isomer only. If a mixture of stereoisomers (e.g. racemic or diastereomers) is formed, select the single structure that shows the appropriate mixture (e.g. lines not dashes). If we convert the reagent to Na2CrO4, H₂SO4, H₂O: The major product if R = CH₂CH3 is compound The maior product if R = H is compound ??? OH D H H though compound
- Be sure to answer all parts. Identify the lettered compounds in the following reaction scheme. This reaction was used in the synthesis of a natural product. HC=CCH,OR' HO CH, Li+ PB13 A LOCOR Draw the structures of compounds A, B, and C. Use R for both R and R' in the structures. Only 1 equivalent of alkyne is being used in the reaction. A draw structure ... в draw structure . draw structure .2. Predict the stereochemical outcome of the following reactions (exo/endo). Indicate the path of reaction by the reactant to explain why you chose that specific stereoisomer. a) NaBH4 LIAIH4 b) d) mCPBA H₂, Pd/CSelect to Draw
- Nonconjugated B,y-unsaturated ketones are in base-catalyzed equilibrium with their conjugated a,ß-unsaturated isomers. The mechanism of interconversion involves the formation of a resonance-stabilized intermediate with three resonance contributors. Draw the structures of these three resonance contributors. OH • You do not have to consider stereochemistry. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. Separate resonance structures using the symbol from the drop-down menu. + *** Sn [F1.) Identify both product structures. 2. [(CH3)2CH₂CuLi What reagents are necessary to carry out the conversion shown below? HỌ CH, CH XCH CHO -OCH₂CH3 1) 2) What is(are) the predicted product(s) of the reaction shown? OCH₂CH3 exccess NaOH heat3) Draw the structures of the major organic product(s) for the following reactions. HI in CH₂Cl₂ 3 excess Cl₂ in H₂O H₂SO4 in H₂O (Two products) Br-Cl in THF 1) BH3 2) alkaline H₂O₂ OSO4 + HOOH
- Draw the major organic product(s) of the following reaction. . CH₂ H₂C-C-CI CH3 You do not have to consider stereochemistry. If no reaction occurs, draw the organic starting material. • When SN1 & E1 pathways compete, show both the substitution and the elimination products. Separate multiple products using the + sign from the drop-down menu. Do not include counter-ions, e.g., Na*, I', in your answer. ● + NaOH Sn [F1) RCO H 2) [H₂SOJ. ? Modify the given structure to draw the major product(s). Use the single bond tool to interconvert between double and single bonds. If a racemic mixture of enantiomers is expected, draw both enantiomers. Note: you can select a structure and use Copy and Paste to save drawing time. H₂C. OH th CH, CH₂ OH H₂C OH aff CH₂ CH₂ Edit DrawingNaN3 НО. NH compound c compound d CI H₂, Pt -85 [References] compound a SOCI₂ SOCI₂ compound d compound e Moclobemide compound b CI The above reaction scheme presents one possible synthesis of the compound. Work out the synthesis on a separate sheet of paper, and then draw the structure of compound e. Consider E/Z stereochemistry of alkenes. • Do not show stereochemistry in other cases. {n [F ? ChemDoodleⓇ