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Which of the following reaction conditions would specifically target the anomeric carbon of the pyranose below:...
Question 28 5 pts Which of the following reaction conditions would specifically target the anomeric carbon of the pyranese below: OH CH OH 6 LOH HO HO cat. HCI H2O PdC H2 BnBr. Nah DMF heat TBDPSCI AgNO, IV - HIO PaBaso CH,COCH cat. H2SO4 V cat.HCI CH, OH VII VI VIII ом O VIII O VII O III OV OIV
"ОН Step 1 Fill in the following reaction scheme based on the Roman numerals provided below: но Η Ν. HO HOH НО-Н Step 2 H-OH H-OH H ОН HO -Η HO -H НО. H HOH HO -H HO+H CH, OH CH OH CH OH Step 3 HCN cat. HCI H,0 HIO NH,OH NaBHA EROH - 11 III IV V NaOCH, Bra H.0 VII cat HCI CH,OH но" Pa/Baso Hy XI VI VIII х HNO H.O heat XI H,02 Fox(50) XII...
OH Fill in the following reaction scheme based on the Roman numerals provided below: но H OH HO HO-H Step 1 HO-H Step 2 H H-OH H OH HOH HOH Step 3 HOH нон но-н HO-H CH, OH CH, OH CH, OH cal HCI HCN HIO NH, OH NaBH но EROH IV V NaOCH PdBaso H,09 BE HO VII cat HCI CH,OH VIII VI XI X HO, HNO, H.O heat XI Fe (50 XII BnB Nah DMF heat XIII ....
PROBLEMS 1. Reagents. Give the structures of the major products (A-G) expected from the following reactions. Assume standard aqueous workup conditions are used for product isolation. a. OH 1. TBSCI imidazole, CH2Cl2 ► DMF, -18°C tot HO OH2. NalO4, CH2Cl2 large excoss A 80% b. олон 1. TSCI. py B "CH, 2. LiEt3BH. THE c. MeOC O H OH 1. TICI (1 cq) py, cat. DMAP - 2. TBSOT 2,6-lutidine, CH2Cl2 C1 79% 3. LIBHA, THE 4. Php. 12 imidazole...
(Matching) Complete the following reaction by selecting the most appropriate reagent or reagents for each missing step. 1.777 2. CH,Br 3.??? OET 4.772 5.777 EIO OH NaH SOCI H,0* heat mi IV NaBH EtOH Br EtOH CH,CH,Br NaOH, THE VI VII VIH IX Х O CH,BE Br Br Br Br XI XII XV XIII XIV < 1st Step [Choose > 3rd Step [Choose 4th Step [Choose) 5th Step
Determine the reagents necessary to carry out each of the following transformations. The reagent choices are listed in the text box above this question (reagents A-K). You will type in ONE letter choice for each reaction from the list above. No reagent set will be used more than once, but not every reagent set will be used. NH2 CN o Br OH Br 5 OH 6 Reaction 1: Reaction 2: Reaction 3: Reaction 4: Reaction 5: Reaction 6: Below is...
18.
Which of the following compound(s) would undergo mutarotation in
aqueous solution?
19. Draw the chair conformation of a-D-galactopyranose.
20. Which of the following compound(s) is a glycoside?
21. Provide the reagents neccesary to carry out the following
conversion.
22. Predict the product(s) for the following reaction.
23. D-glucose & D-galactose are ______epimers of each
other.
24. Predict the product(s) for the following reaction.
25. Which of the following compound(s) would produce D-glucose
and D-mannose when treated with HCN followed...
1. Which of the followi ch of the following reactions is not readily explained by the Arrhenius concept of acids and bases? a. A. HCl(aq) + NaOH(aq) - NaCl(aq) + H20() b. H30(aq) + OH-(aq) + 2H20(1) c. HCI(g) + NH3(g) - NH4Cl(s) d. HC2H302(aq) + H2O(l) H30*(aq) + C2H302-(ag) e. H30 (aq) + OH-(aq) + 2H2O(aq) 2. Classify each of the following species as Brønsted acid or base or both: a) H20, b) OH", c) H30, d) NH3, e)...
18. Draw the structures of Compound 18a. and 18b. (18 pts), clearly indicate your assignments of all proton resonances (8 pts). Calculate the Unsaturation Index of each compound (4 pts) (30 points total) 30 Unsat. Index = (2C+2-H-X+NY2 = 200 25 e = 2.00 ppm, 4.90 f = 1.27 ppm, 20 720 Compound 18a: C,H,O, singlet, 2H triplet, 3H 127 15 d = 2.66 ppm, a = 7.21 ppm, b = 7.18 ppm, doublet, 2H doublet, 2H C = 4.90...
1. Which of the followi ch of the following reactions is not readily explained by the Arrhenius concept of acids and bases? a. A. HCl(aq) + NaOH(aq) - NaCl(aq) + H20() b. H30(aq) + OH-(aq) + 2H20(1) c. HCI(g) + NH3(g) - NH4Cl(s) d. HC2H302(aq) + H2O(l) H30*(aq) + C2H302-(ag) e. H30 (aq) + OH-(aq) + 2H2O(aq) 2. Classify each of the following species as Brønsted acid or base or both: a) H20, b) OH", c) H30, d) NH3, e)...