64056-73-1Relevant academic research and scientific papers
A novel chromophore selectively modifies the spectral properties of one of the two stable states of the plant photoreceptor phytochrome
Lindner, Ingo,Knipp, Bernd,Braslavsky, Silvia E.,Gaertner, Wolfgang,Schaffner, Kurt
, p. 1843 - 1846 (2007/10/03)
An efficient synthetic access to phytochromobilin (1), the chromophore of the plant photoreceptor phytochrome, and to its constitutional isomer 'iso'-phytochromobilin (2) is reported. Both tetrapyrroles are assembled spontaneously with a recombinant apopr
The Reaction of Thioimides with Phosphorus Ylides
Bishop, John E.,O'Connell, John F.,Rapoport, Henry
, p. 5079 - 5091 (2007/10/02)
The reaction of a series of thioimides with phosphorus ylides, in a manner analogous to the Wittig reaction, has been examined.The resulting reaction products represent potentially valuable intermediates in tetrapyrrole pigment synthesis.In addition to the desired thio-Wittig-type coupling reaction, the presence of two competing reaction pathways, S-alkylation and oxidation/reduction, has been observed with certain substrates.These empirical observations have been correlated to theoretical data, derived from MNDO and ab initio calculations, which delineate the structu re-reactivity relationships governing product distribution from the various reaction pathways.A detailed analysis is presented of the mechanism of the thio-Wittig coupling reaction and the competitive S-alkylation reaction.
