Visible-light-mediated phosphonylation reaction: formation of phosphonates from alkyl/arylhydrazines and trialkylphosphites using zinc phthalocyanine
作者:Mehdi Koohgard、Mona Hosseini-Sarvari
DOI:10.1039/d1ob00848j
日期:——
protocol for the photoredox syntheses of arylphosphonates and, for the first time, alkyl phosphonates. Zinc phthalocyanine-photocatalyzed Csp2–P and Csp3–P bond formations were efficiently achieved by reacting aryl/alkylhydrazines with trialkylphosphites in the presence of air serving as an abundant oxidant. The reaction conditions tolerated a wide variety of functional groups.
在这项工作中,我们开发了一种无配体和无碱基的可见光介导方案,用于芳基膦酸盐的光氧化还原合成,并且首次用于烷基膦酸盐。锌酞菁光催化 C sp 2 -P 和 C sp 3 -P 键的形成是通过芳基/烷基肼与三烷基亚磷酸酯在空气作为丰富氧化剂的存在下反应有效实现的。反应条件容许多种官能团。
Arcus; Schaffer, Journal of the Chemical Society, 1958, p. 2428
作者:Arcus、Schaffer
DOI:——
日期:——
Synthesis and Site-Specific Incorporation of Red-Shifted Azobenzene Amino Acids into Proteins
作者:Alford A. John、Carlo P. Ramil、Yulin Tian、Gang Cheng、Qing Lin
DOI:10.1021/acs.orglett.5b03268
日期:2015.12.18
A series of red-shifted azobenzene amino acids were synthesized in moderate-to-excellent yields via a two-step procedure in which tyrosine derivatives were first oxidized to the corresponding quinonoidal spirolactories followed by ceric Ammonium nitrate-catalyzed azo formation with the substituted phenylhydrazines. The resulting azobenzene-Alanine derivatives exhibited efficient trans/cis photoswitching upon irradiation With a blue (448 nm) or green (530 nm) LED light Moreover, nine superfolder green fluorescent protein (sfGFP) Mutants carrying the atobenzene-alanine analogues Were expressed in E. coli in good yields via amber codon suppression with an orthogonal tRNA/Py1RS pair, and one of the mutants showed durable photoswitching with the LED light.