106948-30-5

Upstream product

• 589-87-7 1,4-bromoiodobenzene 
• 2039-86-3 3-bromostyrene 
• 139139-81-4 bis(4-bromophenyl)iodonium triflate 
• 108-86-1 bromobenzene 
• 2039-82-9 1-bromo-4-ethenyl-benzene 
• 4165-57-5 bromobenzene-d5 
• 98-58-8 4-bromobenzenesulfonyl chloride 

Downstream Products

• 156750-18-4 (E)-m,p'-Stilbenebis(N-tert-butylhydroxylamine) 
• 106948-43-0 [1-(3-{(E)-2-[4-(Hydrazono-phenyl-methyl)-phenyl]-vinyl}-phenyl)-1-phenyl-meth-(E)-ylidene]-hydrazine 
• 106948-37-2 {3-[(E)-2-(4-Benzoyl-phenyl)-vinyl]-phenyl}-phenyl-methanone 
• 848153-57-1 (E)-4,4'-(ethene-1,2-diyl)bis(N,N-bis(4-methoxyphenyl)aniline) 

Relevant academic research and scientific papers

Palladium-Catalysed Desulfitative Heck Reaction Tolerant to Aryl Carbon-Halogen Bonds for Access to (Poly)halo-Substituted Stilbene or Cinnamate Derivatives

The palladium-catalysed desulfitative Heck type reaction of (poly)halo-substituted benzenesulfonyl chlorides with alkenes was investigated. Styrene or acrylates in the presence of bromo- or iodobenzenesulfonyl chlorides and a phosphine-free palladium catalyst were found to afford the expected β-arylated Heck type products with complete regio- and stereoselectivities. The reaction tolerates a variety of substituents on the halobenzenesulfonyl chloride. Moreover, no cleavage of the C-Br and C-I bonds was observed in the course of these reactions, allowing further transformations. Using 4-bromobenzenesulfonyl chloride as the central unit, consecutive desulfitative Heck type reaction followed by palladium-catalysed direct arylation allowed to prepare heteroarylated stilbene derivatives in only two steps.

Rh catalyzed c-h activation and oxidative olefination without chelate assistance: On the reactivity of bromoarenes

A Rh catalyzed, no-chelate-assisted C-H activation/oxidative olefination reaction of bromoarenes has been discovered, in which the latter ones seem to act as a substrate, terminal oxidant, and catalyst modifier.

Pincer complex-catalyzed redox coupling of alkenes with lodonium salts via presumed palladium(IV) itermediates

Palladium pincer complexes directly catalyze the redox coupling reactions of functionalized alkenes and iodonium salts. The catalytic process, which Is suitable for mild catalytic functionalization of allylic acetates and electron-rich alkenes, probably o

3,4'-Bis[bis(t-butyl- and methoxy-phenyl)amino]stilbene bis(cation radical)s and their electrochemical and magnetic properties

3,4'-Bis[bis(p-t-butylphenyl)amino]stilbene 1a and 3,4'-bis[bis(p- methoxyphenyl)amino]stilbene 1b were synthesized. The oxidation of 1 was analyzed by electrochemical measurements, which revealed the reversible formation of the bis(cation radical) 2 via a two-electron transfer reaction. The chemical oxidation of 1 with NOBF4 also gave the bis(cation radical) 2; UV/vis and ESR spectroscopies supported aminium radical formation without any side reaction. Magnetization, magnetic susceptibility, and the ESR ΔM(s) = ±2 signal of the biradicals indicated triplet ground states with a large triplet-singlet energy gap.

SULFURIC ACID ESTERS OF SUGAR ALCOHOLS

The present invention is concerned with novel sulfuric acid esters of sugar alcohols and sugar alcohol-like compounds of the formula STR1 Also described are methods for the treatment and/or prophylaxis of arteriosclerotic changes in the vascular wall as well as a process for the manufacture of the compounds of formula I and their salts.

Semiempirical Investigation of Stilbene-Linked Diradicals and Magnetic Study of Their Bis(N-tert-butylnitroxide) Variants

The electronic states of open-shell stilbene diradicals were studied.Previously used semiempirical MO-CI methods were applied to stilbenes having dimethylene, dioxyl, and dinitroxide centers in o,o'-, o,m'-, o,p'-, m,m'-, m,p'-, and p,p'-substitution patterns, and the various singlet-triplet energy gaps were computed to predict qualitative ground state spin multiplicities.Singlet and triplet spin states were essentially degenerate in the m,m'-isomers of disjoint connectivity, while nondisjoint o,m'- and m,p'-isomers had triplet computed ground states.Nitroxide-based diradicals showed considerably smaller computational exchange coupling energies than did other diradicals models studied.As a tests of these computations, stilbenes with two N-tert-butyl nitroxide groups at the o,m'-, m,m'-, and m,p'-positions were prepared, and their magnetic properties were studied by ESR and magnetic susceptibility measurements.The m,m'- and m,p'-isomers were found experimentally to have singlet and triplet ground states, respectively, in accord with the qualitative computed predictions.