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- Which alkene is LEAST reactive in acid-catalyzed hydration? all have equal reactivity А. В. c. D. Е.21. (4) Provide a mechanism for the following transformation. Кон heat Br12.13 a) Predict the products of the following reactions and draw mechanisms showing their formation. Br₂ NaHCO. MeOH 1) II) IV) HO OH OH Тон OH OH PCC CH₂Cl₂ H₂CrO₂ H₂O, H₂SO₂ H₂CrO H₂O, H.SO
- 4G. 4G 7:41 PM 27 4. Draw structures corresponding to the following names: (a) 2,2-Dimethylpropanoyl chloride (c) 5,5-Dimethylhexanenitrile (e) trans-2-Methylcyclohexanecarboxamide (f p-Methylbenzoic anhydride (b) N-Methylbenzamide (d) tert-Butyl butanoate(13) A B C OD What is not an elementary step in the mechanism for the following reaction? H₂O НО. (A) loss of iodide to generate a carbocation (B) 1,2-methyl shift/rearrangement (C) nucleophilic attack by water (D) proton transfer D. You selected this answer.Compound A, C,H160 is optically active and gives a negative results with Iodoform tuɔt and forms B, C,H14 when reacts with concentrated sulphuric acid. Ozonolysis of B forms C. C;H6O and D, C8H$O. Both C and D gives positive result with Iodoform test. Determine the structure of A, B, C and D and explain. 7.
- 31. (8) Provide one reagent that will complete each transformation. (a) (b) (c) (d) OH & OH OH -CH₂OH CH₂OH ? HBr ? ? -CH₂CI OH (e) (f) ? (g) (h) -O+K H ? OH KMnO4 -OCH₂CH3 32. (12) Predict the 4 products resulting from reaction of the alkene with 1 equivalent of HBr (8 pts). (b) label the kinetic product (2 pts). (c) label the thermodynamic product (2 pts). OCH3 -OCH3 H OTS32. (14) Predict the major organic product of the following reactions or provide the reagents needed to complete each transformation. Clearly show stereochemistry where appropriate. (a-b) (c-d) (e-f) (g-h) KOH heat LDA heat CH3 1. Br₂, light 2. CH3O+K, heat CH3 NaBH4 CH3OH Br S Na+ CN H₂O cold KMnO4 1. CH3MgBr 2. H₂O, H+32. (14) Predict the major organic product of the following reactions or provide the reagents needed to complete each transformation. Clearly show stereochemistry where appropriate. (a-b) (c-d) (e-f) (g-h) (i-j) (m-n) KOH heat NBS hv 1. Br₂, light 2. CH3O+K, heat LDA heat CH3 NaBH4 CH3OH CH3 CH₂l2, Cu Zn H₂O „H Br Na+ CN H₂O cold KMnO4 1. CH3MgBr 2. H₂O, H+ CH3OH, heat CH3S- +Na acetone mCPBA
- 21:15 20. Provide the major product of the following reaction. If no reaction occurs, write "n.r." NO₂ CH₂CI, AICI (if o,p-substituted products are possible, only provide the major para-substituted product, otherwise, only provide the meta-substituted product) Send a chat C19). What is the major organic product of the following reactions? LBCH COOH 2. Pyridine ? (-HB) (4) D C " & & & & &5.2. Provide the reagents needed to accomplish the following sequence of reactions. OH 1) Single stereoisomer 2)