All of the resonance lines were fully assigned and the effects of substituents and heteroatoms in ring on chemical shifts were discussed.
对所有共振谱线进行了全面归属，并讨论了不同取代基和环内不同杂原子对化学位移值的影响。
The result shows excellent selectivity of to the 1, 3 - substitution positions, and the alkyl chain may be saturated or unsaturated and may contain one or more heteroatoms.
结果显示对1,3-取代位置的优异选择性，并且烷基链可以是饱和的或不饱和的，并且可以含有一种或多种杂原子。
The result shows excellent selectivity of to the 1, 3 - substitution positions, and the alkyl chain may be saturated or unsaturated and may contain one or more heteroatoms.
结果显示对1,3-取代位置的优异选择性，并且烷基链可以是饱和的或不饱和的，并且可以含有一种或多种杂原子。
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