An Improved, Efficient and Microwave Assisted Synthetic Method for the Synthesis of Chalcone Oximes: An Experimental and Computational Study
作者:Taner Erdogan、Fatma Oguz Erdogan
DOI:10.2174/1570178614666170822163132
日期:2018.1.10
Chalcone oximes are important molecules in organic chemistry. Extant literature contains
several methods for conversion of chalcones to their oxime forms but rapid and efficient new methods
need to be developed. In this study; we have investigated a new, microwave assisted synthetic method
for conversion of chalcones to their oxime forms. For this purpose, a series of known chalcones were
synthesized and converted to their oxime forms employing the method being examined. The results
show that the proposed method is efficient, providing time and energy savings. In the second part of
our study, DFT calculations with B3LYP method have been performed on the synthesized molecules
and computational results have been compared with the experimentally obtained data. All DFT calculations
were performed at the B3LYP/6-31G(d), B3LYP/6-311G(d,p) and B3LYP/6-311+G(2d,p) levels
of theory. NMR calculations were carried out using GIAO and CSGT methods. Additionally, MEP
maps, FMOs, some global reactivity descriptors and Mulliken atomic charges for the synthesized compounds
were computationally determined with the same basis sets.
查耳酮肟在有机化学中是重要的分子。现有文献包含几种将查耳酮转化为肟的方法,但需要开发快速而高效的新方法。在本研究中,我们探索了一种新的微波辅助合成方法,将查耳酮转化为肟形式。为此,合成了一系列已知的查耳酮,并采用正在研究的方法将其转化为肟形式。结果显示,所提出的方法效率高,节省时间和能量。在我们的研究的第二部分,使用B3LYP方法进行了DFT计算,并将计算结果与实验获得的数据进行了比较。所有的DFT计算都在B3LYP/6-31G(d)、B3LYP/6-311G(d,p)和B3LYP/6-311+G(2d,p)理论水平上进行。NMR计算采用GIAO和CSGT方法进行。此外,使用相同的基组,通过计算确定了合成的化合物的MEP图、FMOs、一些全局反应性描述符和Mulliken原子电荷。