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Which of the following reagents can be used to prepare the compound below? + ? OPh...
Which of the following reagents can be used to prepare the compound below? NH2 ? OET (1 equiv.) + Select one or more: O a. H2N OE b. OEt , pyridine C. Pho OEt i d. Eto OEt i e. H OEt
Which of the following reactions can be used to prepare the compound below? ? Ph Ph Select one or more: Pd(PPhz)ą, KOH + Br Ph Ph-B(OMe)2 Ph Ph ? a. Ph + Ph-Br Pd(PPhz)4, Et N ? Ph Ph b. (1) Li, hexanes (2) Cul ? Br Ph Ph-Br Ph Ph ? o C. Ph Grubbs catalyst ? Ph Ph d. Ph-Br, B-H Pd(PPhz)4, KOH Ph- Ph ? ? Ph. e.
Which of the following reactions can be used to prepare the compound below? Ph ? Ph Select one or more: B-H Ph Ph-Br, Pd(PPh), KOH ? Ph- ? a. Ph (1) Li, hexanes (2) Cul Ph Br Ph Ph-Br ? ? b. Ph Pd(PPhz), KOH Ph Br Ph + Ph-B(OME) ? Ph C. Ph Ph Ph-Br Pd(PPhz), Et N ? d. Ph Ph Ph Grubbs catalyst ? e. Ph
Which of the following reactions can be used to prepare the compound below? Ph ? Ph Select one or more: B-H Ph-Br, Pd(PPhz)4, KOH ? Ph Ph ? a. Ph (1) Li, hexanes (2) Cul ? Ph Br Ph Ph-Br ? b. Ph 0 Pd(PPhz), KOH Ph + Br Ph Ph-B(OME)2 ? c. Ph Ph Ph + Ph-Br Pd(PPhz)4, Et N ? Ph Ph Ph Grubbs catalyst ? e. Ph
Which of the following reactions can be used to prepare the compound below? ? Ph Ph Select one or more: (1) Li, hexanes (2) Cul ? Br Ph Ph-Br Ph Ph ? a. Ph + Ph-Br Pd(PPh.)., Et N ? Ph Ph b. Ph Grubbs catalyst ? Ph Ph c. Pd(PPh ).. KOH BO Ph Ph-B(OME) Ph d. ? Ph BH Ph-Br Pd(PPh ). KOH Ph ? Ph Ph e
10. Complete the following synthesis by selecting from the list of 10 reagents below. Each reagent (or set of reagents) is labeled as a letter. In the answer box, simply place the order of reagents used as uppercase letters. For example, if your synthesis involves using reagent A followed by B, followed by C, and then D, your answer would be: ABCD. ? 'H Nang H2 1. LIAIH4 PCC OH HO Pd-C 2. H20 H* A B с D E...
Which of these reagents will not give the transformation below? OH Br o A) Mg + CO2, H30 NaCN H20, H B) o C) Mg, ether H Cro, H,0 D) Mg H30 CO2 E) Li (2 equiv.) CO2 H30 Select an answer and submit. For keyboard navigation, use the up/down arrow kays to select an answer. a a b b c C d d
6. Which of the following reagents can be used to complete the reaction shown below? CH,CH, CH2-CECH CH,CHCHECH b. H2O with H2SO/HgSo. a. BH, followed by H2O2 d. None of the above. c. O, in CH,COOH 7. Which of the following is the major product of the reaction shown below? pyridine 8. Which of the following aromatic substitution reactions is most likely to give a polysubstituted product with benzene as a reactant? a. Friedel-Crafts Acylation b. Friedel-Crafts Alkylation c. Nitration...
Can
you please explain why
For each compound below, circle the letter which corresponds to the best description of its reactivity in electrophilic aromatic substitution (a) More reactive than Ph-OMe (b) More reactive than Ph-O-CO-Me but less than PhoMe (c) More reactive than Ph-H but less than PhO-CO-Me (d) Less reactive than Ph-H but more than Ph-CO2H (e) Less reactive than Ph-CO2H a a b b c c d d e e 16. 17. 18. 19. Ph-NH2 is Ph-N"Mez is...
5. Which of the following reagents is the best choice for the reaction shown below? CH Cн, A) H2O2 B) LAH C) POCI D) OsO E) O 6. Which of the following reagents can be used to convert cyclopentanol to cyclopentane? A) TOSCI, pyridine followed by LiAlH4 B) Na2Cr207, H2SO4 C) NaBH4 followed by H30 D) POClypyr, followed by H2, Pt E) both A and D 7. What is the product of the following reaction? OH Cro3, HC, pyridi ne...