A short and efficient preparation of methyl-[1,2,4]oxadiazolium derivatives with plant-inducing activity
作者:Markus R. Dobler
DOI:10.1039/b316802f
日期:——
We have developed a concise and efficient synthetic method leading to a structurally diverse array of salicylic acid and oxadiazolium derivatives, starting from commercially available halogenated phenols.
Study of the by-products in the synthesis of 1,3-benzoxazin-4-one spiropyrans
作者:A. D. Pugachev、I. V. Ozhogin、A. S. Kozlenko、V. S. Dmitriev、P. B. Chepurnoy、E. L. Mukhanov、B. S. Lukyanov
DOI:10.1007/s11172-023-3864-1
日期:2023.4
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 NMRspectroscopy using 2D homo- and heteronuclear experiments, as well as by elemental
作者:Yu. I. Ryabukhin、V. V. Mezheritskii、V. D. Karpenko、G. N. Dorofeenko
DOI:10.1007/bf00471288
日期:1975.9
Photochromic and thermochromic spirans
作者:B. S. Luk'yanov、Yu. I. Ryabukhin、G. N. Dorofeenko、L. E. Nivorozhkin、V. I. Minkin
DOI:10.1007/bf00945321
日期:1978.2
Investigation of complexation of functionalized 1,3-benzoxazinone spiropyrans with metal ions
作者:V. A. Barachevskii、O. I. Kobeleva、T. M. Valova、L. D. Popov、I. A. Shcherbakov、A. O. Bulanov、V. A. Kogan
DOI:10.1134/s1070363209120378
日期:2009.12
For the first time, complexation between the metal ions and the molecules of photochromic benzooxazine spiropyrans was found and studied. The observed spectral-kinetic changes are explained by the complex formation between molecules of the merocyanine type, resulted from the dissociation of -C-O- bonds, and by electrostatic interaction between complex components depending on the compound structure and the metal ion nature.