Question: Assign the 1H NMR peaks to the correct protons and provide an explanation to justify. OH Me Dyhydroepiepoformin (1) 1H NMR (500 MHz): 6 4.45 (broad dt, J = 8.7 and 5.9 Hz, 1H), 3.57 (ddd, J = 3.7, 1.8 and 0.9 Hz, 1H) 3.34 (dd, J = 3.8 and 0.9 Hz, 1H), 2.75 ( ddq, J = 11.8, 6.7 and 5.1 Hz, 1H), 2.37 (dddd, J = 13.2, 6.0, 5.0 and 1.8 Hz, 1H), 1.85 (d, J = 5.2 Hz, 1H), 1.63(ddd, J = 13.4, 12.0 and 8.5 Hz, 1H), 1.04 (d, J = 6.8 Hz, 3H)

Organic Chemistry: A Guided Inquiry
2nd Edition
ISBN:9780618974122
Author:Andrei Straumanis
Publisher:Andrei Straumanis
ChapterL4: Proton (1h) Nmr Spectroscopy
Section: Chapter Questions
Problem 12E
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Question: Assign the 1H NMR peaks to the correct protons and provide an explanation to justify.
OH
Me
Dyhydroepiepoformin (1)
1H NMR (500 MHz): 6 4.45 (broad dt, J = 8.7 and 5.9 Hz, 1H), 3.57 (ddd, J = 3.7, 1.8 and 0.9 Hz, 1H),
3.34 (dd, J = 3.8 and 0.9 Hz, 1H), 2.75 ( ddq, J = 11.8, 6.7 and 5.1 Hz, 1H),
2.37 (dddd, J = 13.2, 6.0, 5.0 and 1.8 Hz, 1H), 1.85 (d, J = 5.2 Hz, 1H),
1.63(ddd, J = 13.4, 12.0 and 8.5 Hz, 1H), 1.04 (d, J = 6.8 Hz, 3H)
%3D
%D
%D
%D
%3D
Transcribed Image Text:Question: Assign the 1H NMR peaks to the correct protons and provide an explanation to justify. OH Me Dyhydroepiepoformin (1) 1H NMR (500 MHz): 6 4.45 (broad dt, J = 8.7 and 5.9 Hz, 1H), 3.57 (ddd, J = 3.7, 1.8 and 0.9 Hz, 1H), 3.34 (dd, J = 3.8 and 0.9 Hz, 1H), 2.75 ( ddq, J = 11.8, 6.7 and 5.1 Hz, 1H), 2.37 (dddd, J = 13.2, 6.0, 5.0 and 1.8 Hz, 1H), 1.85 (d, J = 5.2 Hz, 1H), 1.63(ddd, J = 13.4, 12.0 and 8.5 Hz, 1H), 1.04 (d, J = 6.8 Hz, 3H) %3D %D %D %D %3D
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