35983-75-6Relevant academic research and scientific papers
Synthesis of hetero atom modified pyrromethenones
Bongards, Christian,Gaertner, Wolfgang
, p. 5749 - 5758 (2007)
A series of six heteroaromatic compounds, ethyl-/methyl-and dimethylfuranones, thiophenones, and cyclopentenones, was synthesized and condensed with a methyl methylpropionate substituted pyrrole, yielding the "right" half of open-chain tetrapyrroles. These compounds serve as light-inducible chromophores in the plant photoreceptor phytochrome. Three-dimensional structure analysis of the 10-oxapyrromethen-1-one 25 revealed a planar conformation, similar to the dipyrromethenone parent compound, stabilized by a hydrogen bond formed between the pyrrole proton and the furanone oxygen atom. All six pyrrole-substituted heteroaromatic derivatives 25-30 show absorbances in the visible spectrum with high molar extinction coefficients. Wiley-VCH Verlag GmbH & Co. KGaA, 2007.
Photochemistry of 5,5-Dimethyl-2(5H)-thiophenone
Kiesewetter, Rene,Margaretha, Paul
, p. 2350 - 2354 (2007/10/02)
On irradiation (λ > 305 nm) in alcohols, 5,5-dimethyl-2(5H)-thiophenone (1b) is converted to (E)-4-mercapto-4-methyl-2-pentenoates 8.These esters undergo a consecutive light-induced reaction affording thiolanes when irradiated in the presence of alkenes, and either 2,3-dihydrothiophenes or 3-thiabicyclohexanes with alkynes.
