23746-59-0

Upstream product

• 292638-85-8 acrylic acid methyl ester 
• 581799-33-9 3-[(1E)-3-methoxy-3-oxoprop-1-en-1-yl]benzoic acid chloride 
• 626-19-7 Isophthalaldehyde 
• 21204-67-1 methyl (triphenylphosphoranylidene)acetate 
• 591-18-4 1-Bromo-3-iodobenzene 
• 115974-96-4 (E)-3-(methoxy-3-oxoprop-1-en-1-yl)benzoic acid 
• 114862-12-3 (1R,2S,3R,4S)-3,4-Bis-[3-((E)-2-methoxycarbonyl-vinyl)-phenyl]-cyclobutane-1,2-dicarboxylic acid dimethyl ester 
• 67-56-1 methanol 
• 23713-86-2 1,3-phenylene-3,3'-bis(2-propenoic) acid 

Downstream Products

• 156808-21-8 (2E,2'E)-3,3'-(1,3-phenylene)-bis(prop-2-en-1-ol) 
• 681462-62-4 3,3'-(4,6-dinitro-m-phenylene)-di-propionic acid dimethyl ester 
• 75160-05-3 3,3'-dioxo-3,3'-m-phenylene-di-propionic acid dimethyl ester 
• 159279-96-6 m-phenylenedi-propiolic acid dimethyl ester 
• 4481-99-6 3,3'-dioxo-3,3'-m-phenylene-di-propionic acid 
• 4843-46-3 3,3′-(1,3-phenylene)dipropiolic acid 
• 60521-72-4 1,3-bis(ethoxycarbonylethynyl)benzene 
• 18910-23-1 3-acetyl-cinnamic acid 
• 6781-42-6 1,3-diacetylbenzene 
• 114862-11-2 (E,Z)-1,3-Phenylendiacrylsaeure-dimethylester 
• 114862-12-3 (1R,2S,3R,4S)-3,4-Bis-[3-((E)-2-methoxycarbonyl-vinyl)-phenyl]-cyclobutane-1,2-dicarboxylic acid dimethyl ester 
• 860517-17-5 2',3',2'',3''-tetrabromo-m-phenylene-di-propionate dimethyl ester 
• 897397-74-9 (2E,2E')-dimethyl 3,3'-(4-nitro-1,3-phenylene)diacrylate 

Relevant academic research and scientific papers

METHOD FOR PRODUCING POLYGUANIDINES

A method for preparing polycondensation products of guanidine, aminoguanidine or diaminoguanidine G with one or more benzyl or allyl derivatives BA according to the following reaction scheme is provided: wherein X, R1, Gua, Y and Z are as defined in the specification. In the disclosed method, at least one benzyl or allyl derivative BA is subjected to a polycondensation reaction with excessive guanidine, aminoguanidine or diaminoguanidine G upon elimination of HX.

High Loading of Pd Nanoparticles by Interior Functionalization of MOFs for Heterogeneous Catalysis

In this report, the issue related to nanoparticle (NP) agglomeration upon increasing their loading amount into metal-organic frameworks (MOFs) has been addressed by functionalization of MOFs with alkyne groups. The alkynophilicity of the Pd2+ (or other noble metals) ions has been utilized successfully for significant loading of Pd NPs into alkyne functionalized MOFs. It has been shown here that the size and loading amount of Pd NPs are highly dependent on the surface area and pore width of the MOFs. The loading amount of Pd NPs was increased monotonically without altering their size distribution on a particular MOF. Importantly, the distinct role of alkyne groups for Pd2+ stabilization has also been demonstrated by performing a control experiment considering a MOF without an alkyne moiety. The preparation of NPs involved two distinct steps viz. adsorption of metal ions inside MOFs and reduction of metal ions. Both of these steps were monitored by microscopic techniques. This report also demonstrates the applicability of Pd@MOF NPs as extremely efficient heterogeneous catalysts for Heck-coupling and hydrogenation reactions of aryl bromides or iodides and alkenes, respectively.

Synthesis of unsymmetrical divinylbenzenes by palladium catalyzed sequential heck reactions starting from carboxybenzenediazonium salts

Six p-, m- and o-unsymmetrical divinylbenzenes 5a, 5b, 6a, 6b, 6c and 7a are synthesized from p-, m- and o- carboxybenzenediazonium tetrafluoroborates via sequential Heck reactions in good overall yield.

Palladium-Imidazolium Carbene Catalyzed Mizoroki-Heck Coupling with Aryl Diazonium Ions

(Matrix Presented) Catalyst formed from N,N-bis(2,6-diisopropylphenyl)dihydroimidazolium chloride and palladium(II) acetate (2 mol %) was used, without added base, to efficiently produce Heck coupled products with olefins and aryl diazonium tetrafluoroborate substrates. The reactions were performed at room temperature, giving product in 2-4 h with 80-90% yields for isolated materials. Diazonium ions, formed in situ directly from anilines, also couple under these conditions.

Palladium-catalyzed reactions of bisarenediazoniutn salts: Two-fold Heck reaction, carbonylation and cross-coupling regimen

Two-fold Heck reaction, carbonylation and cross-coupling reactions of bisarenediazonium salts have been carried out in high yields under mild, aqueous alcoholic conditions to provide a new synthetic repertoire for tetraaryls and other aromatic derivatives having extended conjugation.

syn-(1,3)Cyclophanes by Twofold Photocyclodimerization

Thy syn-(1,3)cyclophane 4 is obtained by a twofold dimerization of the 1,3-disubstituted benzene derivative 3 during photolysis in solution.A combined irradiation of 5 in solid state/solution yields the analogous system 6 with ester groups.Both reactions are strictly regiospecific by head-to-head linkage and stereospecific concerning the syn geometry in the cyclophane and the trans configuration of the substituents on the four-membered rings.The only stereochemical freedom consists in the arrangement of the four-membered rings, which corresponds in 4/6a, b, c to the possible rotamers in 3 and 5.Whereas the skeleton in 4 is rigid, 6 shows a slow inversion of the central ten-membered ring at room temp.The elucidation of the stereoisomers is performed by NOE measurements.