顺/反-1,2,4-噁二唑衍生物的结构确证
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高源, 刘心月, 王思宏, 胡伟
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Structure Elucidation of cis- and trans-1,2,4-Oxadiazol Derivatives
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GAO Yuan, LIU Xinyue, WANG Sihong, HU Wei
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表2 化合物1和2的13C NMR化学位移实验值与理论值
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Table 2 Experimental and theoretical 13C NMR chemical shifts for compounds 1 and 2
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| Position | δC（化合物1实验值） | δC（化合物1计算值） | δC（化合物2实验值） | δC（化合物2计算值） | | 2 | 123.0 | 125.8 | 123.1 | 122.5 | | 3 | 110.4 | 109.9 | 110.6 | 108.6 | | 4 | 111.3 | 111.1 | 111.3 | 109.3 | | 5 | 122.4 | 120.7 | 122.3 | 120.6 | | 6 | 119.8 | 120.4 | 119.8 | 118.6 | | 7 | 119.2 | 117.7 | 119.4 | 117.8 | | 8 | 136.4 | 134.9 | 136.4 | 137.9 | | 9 | 127.3 | 126.1 | 127.4 | 126.2 | | 10 | 22.9 | 22.5 | 22.8 | 24.9 | | 11 | 169.9 | 174.0 | 169.8 | 174.0 | | 12 | 176.3 | 177.7 | 176.2 | 177.1 | | 13 | 104.9 | 101.6 | 105.0 | 100.6 | | 14 | 143.0 | 144.6 | 142.4 | 143.8 | | 15 | 122.4 | 122.9 | 122.6 | 121.2 | | 16 | 129.7 | 133.0 | 132.7 | 130.8 | | 17 | 112.0 | 117.1 | 111.3 | 110.6 | | 18 | 151.9 | 148.8 | 151.4 | 148.2 | | 19 | 40.3 | 40.3 | 40.3 | 40.3 |
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