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- just part c thanks6. a) For each of the following pairs of molecules, identify the stereochemical relationship. Are they enantiomers, diastereomers, constitutional isomers, or the same molecule. CH3 н— сно i) ii) CHO H3C-OH НО HO ОН CI H CI iii) iv) Br H H H CI H. Br CI CI CI b) Explain why carbocation A is formed in step 2, rather than carbocation B (formed by the mechanism shown below). A B]>90% e.e. TSOH (cat.), CH,Cl2 then workup racemic но mostly one diastereomer ]5:1 diastereomer mix product after these transformations >90% e.e. 2) a) NANH2, THF, -20 °C b) OHC-CH,CH3 c) workup ]racemic mostly one diastereomer 3) NaH, MegSi-CI, then workup ] 5:1 diastereomer mix product after these transformations
- Can you please help me out with this problem. ThanksS) Draw the expected major product (except when I explicitly ask for a minor product) in each box NaOCI CH;CO,H : CH,CN : H20 1) `MgBr OH 2) H20 C10H180 C12H240 C12H240 major stereoisomer minor stereoisomer base C13H9F203 "Fiflunisal" NSAID Drug produced by Merck in 1971 NC. CN heat C10H12N2 enant #1 C1OH12N2 enant #2 show "relative stereochemistry" of the methyl groups in the product for full credit. Two enantiomers are produced, draw one in one box, the other in the other box.1) 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 Drawing
- :$:$;$;$;$;$ draw out neatlyС. (1) BH3 (2) H,O,. H,O, NaOH Product is (circle one) i. A racemic mixture ii. A single enantiomer, iii. Achiral or meso D. txt. CI Ci1,2-bis(methylthio)cyclohexane has two asymmetric carbons, thus 4 possible stereoisomers. However, one stereoisomer is a meso compound, so there are only 3. a) Draw all possible stereoisomers. Change the given structures by adding dashes and wedges. Draw the correct stereoisomer of each configuration above the provided labels. i.e draw the (R, S) configuration above the label (R, S). b) Label the enantiomers, diastereomers, and meso compound by filling in the chart (If you redraw the molecules, keep in the same order with the amine groups on the right side of the molecule!) Change the squiggly lines to dashed or wedges in the given structures to make 3 stereoisomers NH₂ NH₂ cyclopentane-1,2-diamine Enantiomers are structures Diastereomers are structures The meso compound is structure NH₂ C 1 (R, S) NH₂ NH Structure(s) 2 (S, S) 2 "NH₂ NH 2 NH 2 3 (R, R)