10539-50-1Relevant articles and documents
Intermolecular Interactions and Energetics in the Crystalline π-π Stacks and Associated Model Dimer Systems of Asymmetric Halogenated Diketopyrrolopyrroles
Calvo-Castro, Jesus,Warzecha, Monika,Oswald, Iain D. H.,Kennedy, Alan R.,Morris, Graeme,McLean, Andrew J.,McHugh, Callum J.
, p. 1531 - 1542 (2016/03/12)
Four novel structurally analogous asymmetric, halogenated N-benzyl substituted diketopyrrolopyrroles (DPP) have been synthesized, and their crystal structures obtained. All four crystal structures exhibit π-π stacks with very small displacements along the
A pigment derivative and dispersion of a color filter and a method of manufacturing composite pigment derivative, and its manufacturing method for a resin composition for a color filter, a color filter, and, an organic light emitting display device and a
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Paragraph 0253; 0254, (2017/03/21)
PROBLEM TO BE SOLVED: To provide a composite pigment derivative dispersion for color filters excellent in pigment dispersibility and dispersion stability, expressing a deposition suppressing function of pigment in a high temperature heating process at
Decarboxylative 1,4-Addition of α-Oxocarboxylic Acids with Michael Acceptors Enabled by Photoredox Catalysis
Wang, Guang-Zu,Shang, Rui,Cheng, Wan-Min,Fu, Yao
supporting information, p. 4830 - 4833 (2015/10/12)
Enabled by iridium photoredox catalysis, 2-oxo-2-(hetero)arylacetic acids were decarboxylatively added to various Michael acceptors including α,β-unsaturated ester, ketone, amide, aldehyde, nitrile, and sulfone at room temperature. The reaction presents a new type of acyl Michael addition using stable and easily accessible carboxylic acid to formally generate acyl anion through photoredox-catalyzed radical decarboxylation.
Synthesis and spectroscopic studies of N,N'-dialkyl derivatives of antisymmetrical 2h,5h-dihydropyrrolo[3,4-c]pyrrole-1,4-diones
Erbas, Secil Celik,Alp, Serap
, p. 329 - 335 (2014/05/06)
2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione derivatives (DPP) are chemically stable, fluorescent molecules, known as High Performance Pigments. Preparation of the soluble derivatives of DPPs provides great advantage in designing the optic sensor for new and existing applications and overcoming aggregation problems in solid matrices. For this purpose, the synthesis of antisymmetric DPPs and the formation of new organic dyes through N,N'-dialkylation and their spectroscopic studies have been carried out both in solutions and in solid phase.
Intermolecular silacarbonyl ylide cycloadditions: A direct pathway to oxasilacyclopentenes
Bourque, Laura E.,Woerpel
supporting information; experimental part, p. 5257 - 5260 (2009/06/18)
(Chemical Equation Presented) Silacarbonyl ylides, generated by metal-catalyzed silylene transfer to carbonyls, participate in formal intermolecular 1,3-dipolar cycloaddition reactions with carbonyl compounds and alkynes to form dioxasilacyclopentane acetals and oxasilacyclopentenes in an efficient, one-step process.
Chemoenzymatic and yeast-catalysed synthesis of diastereomeric ethyl γ-phenyl and γ-(n-pyridyl)paraconates
Forzato, Cristina,Furlan, Giada,Nitti, Patrizia,Pitacco, Giuliana,Valentin, Ennio,Zangrando, Ennio,Buzzini, Pietro,Goretti, Marta,Turchetti, Benedetta
, p. 2026 - 2036 (2008/12/23)
The synthesis of γ-phenyl and γ-(n-pyridyl)paraconates was accomplished by chemical reduction of their respective ketodiester precursors followed by cyclisation of the resulting hydroxy diester intermediates. The cis- and trans-lactones thus obtained were separated and separately subjected to enzymatic hydrolysis with HLAP. The cis-lactonic esters had enantiomeric excesses ranging from 94% to 99%, while for the trans-isomers the ee's ranged from 80% to 93%. The same ketodiester precursors were subjected to reduction with a series of yeasts. The absolute configuration of trans-(-)-2-pyridyl paraconic acid was assigned by means of X-ray analysis of its hydrobromide salt, while the absolute configurations of the other lactones were determined via analysis of their respective CD curves.
Synthesis of 5-aryl-2-oxopyrrole derivatives as synthons for highly substituted pyrroles
Metten, Bert,Kostermans, Maarten,Van Baelen, Gitte,Smet, Mario,Dehaen, Wim
, p. 6018 - 6028 (2007/10/03)
A small library of 2-oxo-5-(hetero)arylpyrroles was prepared starting from 2,3-dioxo-5-(hetero)arylpyrrolidines. The large synthetic possibilities of these 2-oxopyrroles were investigated. The 2-oxopyrroles offer a large number of possible derivatizations
NEW HETEROCYCLIC COMPOUNDS, A PROCESS FOR THEIR PREPARATION AND THEIR USE AS DYES AND PIGMENTS
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Page 8, (2010/02/09)
Compounds of formula (I) wherein R1 is hydrogen, hydroxy, halogen, nitro, cyano, amino, carboxy, carboxylic ester, sulfo, sulfonic ester, carboxylic amide, sulfonic amide, alkylthio, arylthio, alkoxy or aryloxy, R'1 is hydrogen, hydroxy, halogen, nitro, cyano, amino, carboxy, carboxylic ester, sulfo, sulfonic ester, carboxylic amide, sulfonic arnide, alkylthio, arylthio, alkoxy or aryloxy, X is -O-, -S-, -NH- or -N(alkyl)-, X' is -0-, -S-, -NH- or -N(alkyl)-, Y is hydrogen or carboxylic ester, Y' is hydrogen or carboxylic ester, Z is =C- or =N-, Z' is =C- or =N-, x is 0 or 1, when Z is =N-, then x is 0, y is 0 or 1, when Z' is =N-, then y is 0, A is a conjugated linking bridge of the formulae (II), (III), (IV), (V), or (VI), wherein n is 0, 1, 2 or 3, m is 0, 1, 2 or 3, B is a phenyl ring, T is =C(R3)- or =N-, wherein R3 is hydrogen, C1-C12alkyl or CN, W is a heterocyclic, or linear or polycondensed aromatic group which is unsubstituted or substituted by alkyl, halogen, hydroxy, alkoxy, alkylthio or amino, G is -CH= or -N=, and R2 is hydrogen, alkyl, halogen, hydroxy, alkoxy, alkylthio or amino, their preparation and their use in the production of coloured plastics or polymeric color particles.
Vicinal dianions of diethyl α-aroylsuccinates: A general synthetic route to α-aroyl- and α-arylidene-γ-butyrolactones
Pohmakotr, Manat,Sampaongoen, Laddawan,Issaree, Arisara,Tuchinda, Patoomratana,Reutrakul, Vichai
, p. 6717 - 6720 (2007/10/03)
Vicinal dianions derived from diethyl α-aroylsuccinates were found to react with carbonyl compounds β-regioselectively to afford α-aroyl-γ-butyrolactones, which were converted into α-arylidene-γ-butyrolactones by reduction with H2/Pd-C followed
Unsaturated lactones: Synthesis and applications
Yu,Kayser
, p. 1583 - 1588 (2007/10/02)
An easy approach to the synthesis of substituted unsaturated lactones is described, and the reactions of these compounds with nucleophiles leading to the formation of useful intermediates are reported.