Study of the by-products in the synthesis of 1,3-benzoxazin-4-one spiropyrans

被引：0
|
作者：
A. D. Pugachev
I. V. Ozhogin
A. S. Kozlenko
V. S. Dmitriev
P. B. Chepurnoy
E. L. Mukhanov
B. S. Lukyanov
机构：
[1] Southern Federal University,Institute of Physical and Organic Chemistry
[2] Don State Technical University,undefined
来源：
Russian Chemical Bulletin | 2023年 / 72卷
关键词：
spiropyran; 1,3-benzoxazine; by-product; hydrolysis; NMR spectroscopy;
D O I：
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中图分类号：
学科分类号：
摘要：
The work discusses the mechanism of the formation of by-products during the synthesis of spiropyrans based on 1,3-benzoxazin-4-one heterocycle as a result of the hydrolysis of intermediate styryl salt, which explains the low yields of this class of compounds. The structures of the isolated by-products were confirmed by IR and NMR spectroscopy using 2D homo- and heteronuclear experiments, as well as by elemental analysis.
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页码：990 / 996
页数：6
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