339-16-2Relevant articles and documents
Visual Pigments. 11. Spectroscopy and Photophysics of Retinoic Acids and all-trans-Methyl Retinoate
Takemura, T.,Chihara, K.,Becker, Ralph S.,Das, P.K.,Hug, G.L.
, p. 2604 - 2609 (1980)
The photophysics of hydrogen-bonded complexes of retinoic acid and its 9-cis and 13-cis isomers and the photophysics of the dimers of these isomers of retinoic acid were studied.The ivestigation indicated that complexes of retinoic acid and molecules that
Imidazotetrazines as Weighable Diazomethane Surrogates for Esterifications and Cyclopropanations
Svec, Riley L.,Hergenrother, Paul J.
supporting information, p. 1857 - 1862 (2019/12/27)
Diazomethane is one of the most versatile reagents in organic synthesis, but its utility is limited by its hazardous nature. Although alternative methods exist to perform the unique chemistry of diazomethane, these suffer from diminished reactivity and/or correspondingly harsher conditions. Herein, we describe the repurposing of imidazotetrazines (such as temozolomide, TMZ, the standard of care for glioblastoma) for use as synthetic precursors of alkyl diazonium reagents. TMZ was employed to conduct esterifications and metal-catalyzed cyclopropanations, and results show that methyl ester formation from a wide variety of substrates is especially efficient and operationally simple. TMZ is a commercially available solid that is non-explosive and non-toxic, and should find broad utility as a replacement for diazomethane.
Correlation of fluorescence quenching in carotenoporphyrin dyads with the energy of intramolecular charge transfer states. Effect of the number of conjugated double bonds of the carotenoid moiety
Fungo, Fernando,Otero, Luis,Durantini, Edgardo,Thompson, William J.,Silber, Juana J.,Moore, Thomas A.,Moore, Ana L.,Gust, Devens,Sereno, Leonides
, p. 469 - 475 (2007/10/03)
The electrochemistry of a series of non-symmetric synthetic carotenoids, with different conjugated double bounds chain lengths (5 to 11) is reported. The values of the first oxidation potentials of the carotenoids were evaluated by digital simulation of t
