Oxazolone-Based Photoswitches: Synthesis and Properties
作者:Marina Blanco-Lomas、Ignacio Funes-Ardoiz、Pedro J. Campos、Diego Sampedro
DOI:10.1002/ejoc.201300641
日期:2013.10
synthesis, photophysics and photochemistry of a family of molecular switches inspired by the green fluorescent protein (GFP) chromophore is presented. These compounds can be synthesized in one step and good yields, their photophysical properties may be tuned by the substituents, solvent and wavelength of irradiation, and they show very efficient and fast photoisomerization. Furthermore, their high thermal
Synthesis of isomeric methyl- and dimethyl-substituted 4-benzylidene-2-phenyloxazolin-5-ones and ring-opened derivatives
作者:Everton S. Nicholas、David J. Phelps
DOI:10.1021/je60084a033
日期:1980.1
Phelps, David J.; Godreau, Paul V.; Nicholas, Everton S., Journal of the Chemical Society. Perkin transactions II, 1981, p. 140 - 142
作者:Phelps, David J.、Godreau, Paul V.、Nicholas, Everton S.
DOI:——
日期:——
NICHOLAS E. S.; PHEIPS D. J., J. CHEM. AND ENG. DATA, 1980, 25, NO 1, 89-90
作者:NICHOLAS E. S.、 PHEIPS D. J.
DOI:——
日期:——
Catalytic aza-Wittig Reaction of Acid Anhydride for the Synthesis of 4<i>H</i>-Benzo[<i>d</i>][1,3]oxazin-4-ones and 4-Benzylidene-2-aryloxazol-5(4<i>H</i>)-ones
copper-catalyzed reduction of phosphine oxide was used and found effective for this transformation. Additionally, the one-pot catalyticaza-Wittig reaction of carboxylic acids was achieved. Furthermore, NMR experiments and Hammett plot recorded the process of catalyticaza-Wittig reaction of anhydride, which provides direct proof that the copper-catalyzed reduction of waste phosphine oxide is the key step
与醛,酮,酰胺和酯的aza-Wittig反应相比,酸酐的aza-Wittig反应总是被忽略,这应该是Wittig反应的重要组成部分。在这里,酸酐的aza-Wittig反应和酸酐的aza-Wittig催化反应均以高收率开发,这为合成4 H-苯并[ d ] [1,3]恶嗪-4-酮和4-亚苄基-2-芳基恶唑-5(4 H)-那些。使用了铜催化的氧化膦还原的策略,发现该策略对这种转化有效。另外,实现了羧酸的一锅催化的氮杂-维蒂希反应。此外,NMR实验和Hammett曲线记录了酸酐的催化氮杂-维蒂希反应过程,这直接证明了铜催化的废氧化膦的还原是该转化过程中的关键步骤。