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Question 28 5 pts Which of the following reaction conditions would specifically target the anomeric carbon...
Which of the following reaction conditions would specifically target the anomeric carbon of the pyranose below: OH CH OH 20 НО. он HO cal. HCI H20 PaC, H2 II BnBr, NaH DMF, heat III TBDPSCI AgNO, IV HIO CH,COCH, cat. H,SO V cat. HCI CH,OH VII Pd/Baso H VIII VI O VI O O O VII O IV OV VII
"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 ....
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...