Unexpected Dual Acylation of Naphtho[2,1-b]furan at the Aryl and Hetaryl Ring: Experimental and Theoretical Study
作者:V. P. Rybalkin、S. Yu. Zmeyeva、V. V. Tkachev、M. E. Kletskii、O. N. Burov、L. L. Popova、A. D. Dubonosov、V. V. Bren、S. M. Aldoshin、V. I. Minkin
DOI:10.1134/s1070363219070041
日期:2019.7
has been characterized by IR and NMR spectroscopy, mass spectrometry, and X-ray diffraction analysis methods. Quantum-chemical simulations using the DFT B3LYP/6-311++G** method have reproduced the experimental geometry of isomeric acetyl[2,1-b]furans and indicated their close thermodynamic stability. However, the Fukui indices of the reactivity f− have indicated the preference of the primary attack of
根据反应条件的不同,2-乙基萘[2,1- b ]呋喃的酰化作用会导致1-乙酰基,5-乙酰基和1,5-二乙酰基衍生物的比例发生很大变化。成分,其结构已通过IR和NMR光谱,质谱和X射线衍射分析方法进行了表征。使用DFT B3LYP / 6-311 ++ G **方法进行的量子化学模拟再现了异构的乙酰基[2,1- b ]呋喃的实验几何形状,并表明它们具有接近的热力学稳定性。然而,反应性的指标福井˚F -已表明电体在C的主要攻击的偏好5位置(˚F -与C 1位置(f − = 0.06)相比= 0.18 )。