Poe, Ambata published the artcileEffective tuning of ketocyanine derivatives through acceptor substitution, Category: isoxazole, the publication is Chemistry – A European Journal (2015), 21(21), 7721-7725, database is CAplus and MEDLINE.
A series of ketocyanine derivatives possessing bis(diarylamino)fluorenyl donors and variable acceptors installed at the bridging carbon atom were synthesized to investigate how the electronic structure of the dye can be systemically tuned through stabilization of the cyanine-like character of the donor by increasing the acceptor strength. Anal. of the 1H NMR spectra indicates that the “charge-separated” species dominates in these dyes, given that carbons possessing a pos. or neg. charge in the resonance structures of this state purposefully shift downfield or upfield, resp., depending on the strength of the acceptor moiety. In DAA-Fl-PI, (a fluorenylideneisoxazolone) the acceptor strength and the gain of acceptor aromaticity indicates a predisposition of the separated state, indicated by asymmetry in the 1H NMR spectrum, as well as uneven distribution of the HOMO on the fluorenyl donor.
Chemistry – A European Journal published new progress about 1076-59-1. 1076-59-1 belongs to isoxazole, auxiliary class Oxazoline,Benzene,Ester, name is 3-Phenylisoxazol-5(2H)-one, and the molecular formula is C9H7NO2, Category: isoxazole.
Referemce:
https://en.wikipedia.org/wiki/Isoxazole,
Isoxazole | C3H3NO – PubChem