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核磁共振谱 于辉 同济大学化学系 yuhui@tongji 65982298-807

核磁共振谱 于辉 同济大学化学系 yuhui@tongji.edu.cn 65982298-807. 核磁数据表述方式. (1) 4- 碘甲基 -5,5- 二甲基 - 二氢呋喃 -2- 酮 ( 2e ). pale yellow oil. 1 H NMR (300 MHz, CDCl 3 ):

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核磁共振谱 于辉 同济大学化学系 yuhui@tongji 65982298-807

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  1. 核磁共振谱 于辉 同济大学化学系 yuhui@tongji.edu.cn 65982298-807

  2. 核磁数据表述方式 (1) 4-碘甲基-5,5-二甲基-二氢呋喃-2-酮(2e) pale yellow oil. 1H NMR (300 MHz, CDCl3): δ1.31 （3H, s）, 1.51 (3H, s), 1.95-1.97 (1H, m), 2.41-2.50 (1H, m), 2.72-2.75 (1H, m), 2.82-2.90 (1H, m),3.09 (1H, dd, J = 10.2, 9.6 Hz ), 3.25 (1H, dd, J = 10.2, 5.1 Hz ), EIMS: m/z (relative intensity) 254 (M+, 6), 239(7), 191 (6), 173 (4), 127 (34), 69 (89), 41 (100). Anal. calcd for C7H11IO2: C, 33.09; H, 4.37. Found: C, 33.55; H, 4.60.

  3. J. Org. Chem.1997,62, 7513

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