19. What reagents will accomplish this transformation? A) 1. H2SO4 2. HBO 3. KO'Bu B) 1....
19. What reagents will accomplish this transformation? A) 1. H2SO4 2. HBr 3. KOBu B) 1. NaOH 2, H2SO4. 3. H20 C) 1. HBr 2. NMez 3. KO'Bu D) 1. NaBr 2. H20 3. NMe3 OH
18. Which sequence of reagents would be expected to accomplish the transformation of 1-butyne shown below? A) 1)H2O/H2SO4, HgSO4 cat.; B) 1)HBr C)1)H2, Lindlar catalyst; D) )HBr, peroxides; E) O 2) H2, Pt 2) H2, Pt; 2) BH3*THF; 2) NaOH; 2) H2O 3) NaOH 3) H202, NaOH 3) H2, Pt
25) What reagents can best be used to accomplish the following transformation? A) H+, H2O B)1. BH3-THF 2. Ho, H202 C)1. Hg(OAc)2, H2O/THF 2. NaBH4 D)1. Hg(O2CCF3)2 CH3OH 2. NaBH4 E) NaOH, H20
5. What set of reagents will best accomplish the following transformation? NO2 A. 1) CH3CH2CH=CH2, HF; 2) H2SO4; 3) HNO3, H2SO4; 4) H2O, heat; B. 1) CH2CH2CH=CH2, HF; 2) H2SO4; 3) HNO3, H2SO4; c. 1) HNO3, H2SO.; 2) CH3CH2CH=CH2, HF; D. 1) CH,CH,CH=CH2, HF; 2) HNO3, H,SO.; E. none of the above
QUESTION 5 What reagents can best be used to accomplish the following transformation? OH 1. ВНз-THF 2. но-, Н202 NaOH, H2O н-, Н20 1. O3 2. (CH3)2S
22. Which reagent will accomplish the following transformation? OH CHCH3 .CCH3 A) NaOH B) CrO3, H2SO4 C) CH3MgBr D) NaBH4 E) H2, Pd
7. Please choose the set of reagents that will accomplish the following transformation with the highest yield od-dhe CH (A) (B) | 1) HOẶC, Bra 1) H30*, Br2 1) NH(Me)2, cat. H2SO4 2) Mel (D) 1) NaOH, Bra 2) Mgº, THE 3) Mel 2) pyridine 2) pyridine 3) Me2Culi 3) MeMgBr
Select the reagents that would be accomplish the given
transformation. These are intentionally designed to make you
consider stereochemistry, regioselectivity, and chemoselectivity.
Pay careful attention to all the details
.
Question 3: is, 1. TSCI. pyridine 2. NaOH, HEO 1. PBry, DCM 2 NaOH, HEO 1. SOCI, pyridine 2. KOBU, HOIBU 1. HB 2. EIOH, 50 °C Question 4: A Mgr 2. H2SO, A 3. Brą, hv. CBA 2 H-0, HCM 3. PBrz. DCM с Mght MgBr 2. HO, HCI...
Which set of reagents will accomplish the following transformation? COOH NH Br A) B) C) 1) CH;CI / AICI 2) Br2/FeBrz 3) Conc. KMnO4 OH, A. then H30 4) Cl2/AICI; 5) HNO3 H2SO4 6) Sn/HCI 1) CH3C1 / AICI 2) Conc KMnO4 OH, A, then H30* 3) HNO; / H2SO4 4) Sn HCI 5) Bry/FeBrz 6) C12/AICI: 1) CH,CI/AICI: 2) Bry/FeBrz 3) Cly/AICI: 4) Conc. KMnO OH, Athen H30 5) HNO3 /H SO. 6) Sn/HCI B) D) 1) HNO; H2SO4...
A set of reagents to accomplish the following transformation is: H.C (A) 1. PCC, CH.Cl: 2.CH,MgBr; 3. H,0; 4. HBr (C) 1. PCC, CH.CI2.CH,MgBr; 3.1909, 4. Brz (B) 1. HBF, ROOR; 2. CH,MgBr; 3. M,0", 4. PCC, CH,Cle (D) 1. Br; 2. Mg, ether; 3. CH,Br