41304-88-5

Upstream product

• 536-74-3 phenylacetylene 
• 100-20-9 terephthaloyl chloride 
• 106-37-6 1.4-dibromobenzene 
• 42093-83-4 1,1'-(1,4-phenylene)bis-(3-phenylprop-2-yn-1-ol) 
• 623-27-8 terephthalaldehyde, 
• 201230-82-2 carbon monoxide 
• 624-38-4 para-diiodobenzene 
• 589-87-7 1,4-bromoiodobenzene 
• 250643-76-6 tris((2-phenyl)ethynyl)indium 

Downstream Products

• 55337-57-0 1-[4-(3,3-Diethoxy-3-phenyl-propionyl)-phenyl]-3,3-diethoxy-3-phenyl-propan-1-one 
• 55337-60-5 (Z)-3-Phenoxy-1-[4-((Z)-3-phenoxy-3-phenyl-acryloyl)-phenyl]-3-phenyl-propenone 
• 1849-27-0 1,4-bis(2-phenylethynyl)benzene 
• 123825-58-1 1,4-bis(4,6-diphenylpyridin-2-yl)benzene 
• 56055-88-0 (E)-3-Diethylamino-1-[4-((E)-3-diethylamino-3-phenyl-acryloyl)-phenyl]-3-phenyl-propenone 
• 56055-93-7 (E)-3-Diethylamino-3-phenyl-1-[4-(3-phenyl-propynoyl)-phenyl]-propenone 
• 55337-56-9 1-[4-(3,3-Dimethoxy-3-phenyl-propionyl)-phenyl]-3,3-dimethoxy-3-phenyl-propan-1-one 
• 56055-94-8 3-morpholin-4-yl-3-phenyl-1-[4-(3-phenyl-prop-2-ynoyl)-phenyl]-propenone 

Relevant academic research and scientific papers

LED based on alternating benzene-furan oligomers

A series of conjugated-chain compounds which contain two furan units and more than three other aromatic ring units were synthesized by two different methods, their UV–visible absorption coefficient (ε), maximum absorption wavelengths (λa), fluorescence emission wavelengths (λe), stokes shift and quantum yields (Φ) were determined, the relationships between the molecular structures and the effects of spectral behaviors were discussed. Meanwhile, the excitation spectrum and emission spectrum of 2b and 2d in solid and in ethyl acetate were respectively recorded, the thermal stability of 2b and 2d was evaluated, and the fluorescence emission behaviors of two light emitting diodes, fabricated with 2b and 2d as phosphors, were investigated. The results showed that most of target compounds can perform high fluorescence emission ability, compounds 2b and 2d can perform higher thermal stability under 350?°C and they are suitable for making light emitting diode as phosphors, the light emitting diodes fabricated with 2b and 2d can show higher fluorescence emission ability. Therefore, those compounds are worthy of further being developed as fluorescent emission materials.

COMPOSITIONS COMPRISING A POLYMERIC NETWORK

The present invention relates to a composition comprising a polymeric network having at least one unit of formula (I), (II), and/or (III); (I) (II) (III) wherein said composition is obtained by contacting at least one compound A comprising at least two functions selected from the group of function of formula X—C(═O)—CHR1—C(═O)—R2, —C(═O)—C—R2; or —C(═O)—CR1═CR2—NR4R5; wherein at least 25% by weight of compounds A have a functionality ≦5, with % by weight relative to the total weight of compounds A; with at least one compound B comprising at least one NH2, or NH3+ groups; wherein X, R1, R2, R3, R4, R5, L1 and L2 have the same meaning as that defined in the claims. The present invention also relates to a compound comprising at least two units and at most 5 units of formula (I), (II), and/or (III); wherein R1, R2, R3, X, L1 and L2 have the same meaning as that defined in the claims. The present invention also relates to processes for preparing said composition and said compounds, to material, articles, and polymers comprising or using said compositions and compounds, and the use thereof.

Palladium anchored on amine-functionalized K10 as an efficient, heterogeneous and reusable catalyst for carbonylative Sonogashira reaction

The present work describes the immobilization of palladium chloride (II) on the amine functionalized K10 support and its application toward the carbonylative Sonogashira reactions. The various catalyst characterization techniques revealed the successful grafting of APTES moiety on the K10 clay surface through covalent bonding and Pd with the NH2 groups of APTES@K10 through co-ordinate bonding. The immobilized catalyst was successively applied for copper and phosphine free carbonylative Sonogashira reaction of aryl and hetero aryl iodides with terminal alkynes. To our delight, the electron withdrawing aryl halides can be efficiently utilized as an electrophiles giving higher selectivity toward carbonylated products. Moreover, dibenzoylmethane which is a potential synthetic intermediate in organic transformation has been also synthesized using this protocol. Recovery of catalyst by simple filtration and its reuse up to four consecutive cycles ensure the robustness of present catalytic protocol.

Synthesis of 3-carbonyl pyrazole-5-phosphonates via 1,3-dipolar cycloaddition of Bestmann-Ohira reagent with ynones

The present work explores the hitherto unexplored reactivity of ynones as dipolarophiles with Bestmann-Ohira reagent. The reaction offers a convenient route for the synthesis of regioisomerically pure 3,5-disubstituted or 3,4,5-trisubstituted pyrazoles in

Synthesis of 3-carbonyl pyrazole-5-phosphonates via 1,3-dipolar cycloaddition of Bestmann-Ohira reagent with ynones

The present work explores the hitherto unexplored reactivity of ynones as dipolarophiles with Bestmann-Ohira reagent. The reaction offers a convenient route for the synthesis of regioisomerically pure 3,5-disubstituted or 3,4,5-trisubstituted pyrazoles in

Carbonylative Sonogashira coupling of terminal alkynes with aryl iodides under atmospheric pressure of CO using Pd(II)@MOF as the catalyst

A novel, highly efficient, and phosphine-free heterogeneous palladium-MOF catalytic system for the carbonylative Sonogashira coupling of terminal alkynes with aryl iodides was developed. The catalyst could efficiently promote the carbonylative coupling reaction under atmospheric pressure of CO, affording the corresponding aryl α,β-alkynyl ketones in good to excellent yields. Besides high activity and selectivity, the proposed catalytic system features a broad substrate scope for both alkynes and aryl iodides. Moreover, the heterogeneous catalyst was recyclable, showed negligible metal leaching, and could be reused at least five times without significant loss in catalytic efficiency under the investigated conditions. the Partner Organisations 2014.

Palladium-catalyzed carbonylative sonogashira coupling of aryl bromides via tert -butyl isocyanide insertion

A simple and efficient palladium-catalyzed carbonylative Sonogashira coupling via tert-butyl isocyanide insertion has been developed, which demonstrates the utility of isocyanides in intermolecular C-C bond construction. This methodology provides a novel pathway for the synthesis of alkynyl imines which can undergo simple silica gel catalyzed hydrolysis to afford alkynones. The approach is tolerant of a wide range of substrates and applicable to library synthesis.

New synthetic applications of indium organometallics in cross-coupling reactions

The use of indium organometallics in multifold and sequential cross-coupling reactions is reported. Triorganoindium reagents (R3In) react, under palladium catalysis, with oligohaloarenes affording the multiple cross-coupling products in a single operation. In the reaction, the three organic groups (alkyl, aryl, alkenyl or alkynyl) attached to indium are efficiently transferred to the electrophile, with only a slight excess of organometallic reagent. We demonstrate that indium organometallics are useful reagents for sequential cross-coupling reactions. This reaction illustrates the high chemoselectivity of R3In. Georg Thieme Verlag Stuttgart.

Synthesis of Ynones by Palladium-Catalyzed Acylation of Terminal Alkynes with Acid Chlorides

Phosphane-free oxime-derived palladacycle 2 is an efficient precatalyst for the copper-free acylation of terminal alkynes with different carboxylic acid chlorides in toluene in the presence of 3 equiv of TEA as base, giving the corresponding ynones in goo

Studies on copper(I) catalysed cross-coupling reactions: A convenient and facile method for the synthesis of diversely substituted α,β-acetylenic ketones

Terminal alkynes reacted with acid chlorides in the presence of cuprous iodide as a catalyst in Et3N at room temperature yielding a number of α, β-acetylenic ketones in good to excellent yields.