- Chem 22501 Problem Set Fall 2021 34 For The Following Reaction Sequence What Significant Change S In Ir Ignoring C 1 (121.3 KiB) Viewed 67 times
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CHEM 22501 Problem Set (Fall 2021) 34. For the following reaction sequence, what significant change(s) in IR (ignoring C-H absorptions) would you expect? a CH MBI -OH b. Ho A) 1710 cmpeak disappears; 3300 cm: peak appears B) 1710 cm-1 peak appears; 1650 cm-1 peak disappears C) 2150 cm" peak disappears; 3300 cm' peak appears D) No change would be observed. 35. For the following reaction sequence what significant change(s) in the IR spectrum (ignoring C-H absorptions) would you expect? CN CHO a. DiBAL-H b. H307 A) 2150 cm peak disappears, 3300 cm peak appears B) Peak at 1720 cm' appears, no other change occurs C) 2250 cm peak disappears, 1720 cm peak appears D) 2250 cm- peak disappears, no other change occurs 36. A downfield (9-10 ppm) singlet is observed in the 'H NMR spectrum of: A H au ten 37. For the following compound how many different signals would you see in the proton NMR? (Assume that you can see them all.) A) 1 B) 2 C) 3 D) 4 E) 5