64328-75-2Relevant academic research and scientific papers
PHENACYL ESTERS - A NEW TYPE OF LUQUID-CRYSTALLINE COMPOUND
Torgova, S. I.,Karamysheva, L. A.,Agafonova, I. F.
, p. 1162 - 1168 (2007/10/02)
The reaction of aliphatic, alicyclic, and aromatic acids with 4-substituted α-bromoacetophenones gave a series of new liquid-crystalline phenacyl esters.Their mesomorphous characteristics are discussed in relation to the structures of the acid and ketone parts of the molecule.
LES TRIBROMURES DE PHOSPHONIUMS. AGENTS DE BROMINATION DE SUBSTRATS ORGANIQUES
Cristau, Henri-Jean,Torreilles, Eliane,Morand, Philippe,Christol, Henri
, p. 357 - 368 (2007/10/02)
The reactivities and selectivities of phosphonium tribromides 1-4 towards ketones and their ketals, in the presence of other functional group reactive toward bromide (free enolic position, activated aromatic ring or double bond), are studied and compared with the trimethyl phenyl ammonium tribromide 5.The abilities of the two kinds of tribromides are similar, with a better selectivity of phosphonium salts toward unsaturated ketones, which is probably induced by the greater stability of the ion-pair in phosphonium salts.They act essentially by the tribromide without specific bond interactions between phosphorus and heteroatom of the substrate.
Synthese de derives du tetrathiafulvalene a proprietes mesomorphogenes
Polycarpe, Catherine,Torreilles, Eliane,Giral, Louis,Babeau, Annick,Tinh, Nguyen-Hun,Gasparoux, Henri
, p. 1741 - 1745 (2007/10/02)
We report the synthesis of di(4-alkoxyphenyl)- and di(4-alkanoyloxyphenyl)tetrathiafulvalenes.Their polymorphism has been investigated.
Transitions de Phase en Series Mesogenes: Les di TTF et les diTTF
Chann, N. B.,Cotrait, M.,Gautlier, J.,Haget, Y.,Tinh, Nguyen Huu,et al.
, p. 129 - 142 (2007/10/02)
The polymorphism of the di(4-alkylphenyl) and di(4-alkoxyphenyl) tetrathiafulvalene (TTF) is investigated by optical, crystallographic and calorimetric methods.All the studied derivatives are mesomorphic.The first mesophase is always a smectic G phase; th
