180466-98-2Relevant academic research and scientific papers
Tetrahydroquinolinyl phosphinamidates and phosphonamidates enhancing tolerance towards drought stress in crops via interaction with ABA receptor proteins
Decker, Luka J. B.,Dittgen, Jan,Frackenpohl, Jens,Freigang, J?rg,Génix, Pierre,Helmke, Hendrik,Lange, Gudrun,Luemmen, Peter,Schmidt, Jana,Schmutzler, Dirk,Vors, Jean-Pierre
, (2020/09/16)
New phosphorous-containing lead structures against drought stress in crops interacting with RCAR/(PYR/PYL) receptor proteins were identified starting from in-depth SAR studies of related sulfonamide lead structures and protein docking studies. A converging 6-step synthesis via phosphinic chlorides and phosphono chloridates as key intermediates afforded envisaged tetrahydroquinolinyl phosphinamidates and phosphonamidates. Whilst tetrahydroquinolinyl phosphonamidates 13a,b exhibited low to moderate target affinities, the corresponding tetrahydroquinolinyl phosphinamidates 12a,b revealed confirmed strong affinities for RCAR/ (PYR/PYL) receptor proteins in Arabidopsis thaliana on the same level as essential plant hormone abscisic acid (ABA) combined with promising efficacy against drought stress in vivo (broad-acre crops wheat and canola).
Preparation of donor-acceptor substituted fluorostilbenes and crystal chemistry of fluorinated (E)-4-(4-halogeno-styryl)-benzonitriles
Mariaca, Raúl,Labat, Ga?l,Behrnd, Norwid-Rasmus,Bonin, Michel,Helbling, Fabien,Eggli, Patrick,Couderc, Ga?tan,Neels, Antonia,Stoeckli-Evans, Helen,Hulliger, Jürg
experimental part, p. 175 - 196 (2009/07/25)
The syntheses and crystal structures of a series of fluoro-substituted halogeno (Cl, Br, I)-cyano-stilbenes containing donor and acceptor groups (D-π-A) are reported. These molecules show a tendency to form antiparallel chain-like structures and herringbone packing, crystallising predominantly in a centric space group. However, second harmonic generation measurements bear evidence for orientational disorder leading to partial polar order below the ordinary X-ray structure determination limit. Some co-crystals are isostructural with their components. The non-fluoro as well as the halogeno-fluoro substituted components of co-crystals seem to impose their crystal structure on the complementary fluoro- or cyano-fluoro substituted components. Co-crystallization enhanced the deviation from centrosymmetry.
The effect of intermolecular interactions on the electro-optical properties of porphyrin dendrimers with conjugated dendrons
Frampton, Michael J.,Magennis, Steven W.,Pillow, Jonathan N. G.,Burn, Paul L.,Samuel, Ifor D. W.
, p. 235 - 242 (2007/10/03)
We have synthesised a new family of dendrimers with stilbene dendrons attached to a porphyrin core via a stilbene unit and compared their properties with a family of dendrimers with the same core and dendrons but with the dendrons attached via a phenyl un
Reactivity of the acids of trivalent phosphorus and their derivatives. Part VI. The reaction of the >P-O- anions with benzyl bromides para-substituted in the phenyl ring
Witt, Dariusz,Rachon, Janusz
, p. 169 - 187 (2007/10/03)
The reaction of p-substituted benzyl bromides with the >P-O- ions in THF, alcohols and toluene as the solvents is described. According to the reduction potential of the p-substituted benzyl bromides and the solvent used the formation of the P-C bond, debromination and/or dimerization occur. The principal process is believed to be X-philic substitution, the dimers are formed through a secondary process via SET from the p-substituted benzyl anions into the p-substituted benzyl bromides.
