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- 6. Propose the key transition structure that accounts for the stereoselectivity observed in the following reaction. Ph SPh OCH 3 LiB (Et) 3H Ph OH OCH 3 SPh 92:8 favoring synH14.41 - Level 3 :: Unanswered • 3 attempts left Compound A produces compound E in four steps. What is compound A? a b C C D d E e Br 1) MeMgBr H2Cr207 1) MgBr H2SO4 (conc.) 2) H20 2) H2O NaBr Possible starting materials HO H. HO. a) b) c) d) e) AEven though you used different amounts of NaSCN for each test mixture the values of Kc you measured for each should be similar. Explain why you obtained a similar value of Kc even though each mixture had a different [SCN- ]init. Hint: consider the [Fe3+ ]eq and [FeSCN2+]eq in each mixture.
- The type of the bonds drawn in red color is... H3 RA R R Select one: a. 2e's-3c bond b. 1e's-2c bond C. 3e's-2c bond d. 2e's-2c bond In the lat aw ot TM cluster bridging by CO ligand is formed to strength of the M-Lbond Select one: True False In the Ist raw of TM. cluster bridging by CO ligand is formed to strength of the M-L bond. Select one: True False Next page The following catalytic cycle, represents: A C CHO Select one: a. Wilkinson's alkene hydrogenation Select one: a. deprotonation, deprotonation b. protonation, deprotonation C. protontion, protontion d. deprotonation, protonation The following reaction is an [Fe(CO),+ 2H → H,Fe(CO), -2 Select one: a. elimination reaction b. dimerization reaction C. addition reaction d. substitution reactionI need help calculating the theoretical yield of the final product shown in the procedure below!Which diene and dienophile would you employ to synthesize the following? CN a. MeO2C, b. H. H. CO2ME с. CN H3C d. CO,Me
- At what pH will Cl3CCO2H dissociate 50% in water? At what pH will it dissociate 90%? At what pH will it dissociate 10%?Draw the structure of the major product of following reactions: CH212, Zn(Cu) 1. Et,0 MgBr + H3O* 2. Zn 3. HCI CH212, Zn(Cu) 4. Et,0 5. H30* + CH;CH2MGB. CI CI 6. Zn ELOH MgBr H3O* + CO2 7. (CeH)2CuLi + ICH2(CH2)eCH3 diethyl ether 8. CuLi diethyl ether Br 9. Br 10 diethyl ether H3COnly typed solution
