A Facile Linking of the Pyrrole Ring with Functionalized 3(2H)-Furanone Moieties
摘要:
The CN-functionalized pyrrole(indole)-3(2H)-furanone derivatives are readily synthesized via the domino reaction of diverse pyrrole(indole) carboxylic acids with tertiary cyanopropargylic alcohols (Et3N, MeCN, MW reactor, 100 degrees C, 1.2 atm) in up to 93% yield.
Organocatalyzed Microwave-Assisted Competing Cyclization of Cyanopropargylic Alcohols with Carboxylic Acids: 4-Cyano-3(2H)-furanones versus 4-Cyano-[(Z)-3-cyanomethylene]-2,3-dihydrofurans
reactant ratio, catalyst content) and the reactant structure, the 2:1 adduct formation being favored by an excess of cyanopropargylic alcohol, lower catalyst content, and bulky substituents at the carboxylic functions. Both competing reactions proceed via the same intermediates, keto esters, which either intramolecularly cyclize to the 1:1 adducts, or intermolecularly add the second molecule of cyanopropargylic
Molecular and Crystal Structures of 4-Cyano-3(2H)-Furanones and Structural Effects in 1H NMR Spectra
作者:A. V. Afonin、A. V. Vashchenko、O. G. Volostnykh、A. V. Stepanov、A. G. Mal’kina
DOI:10.1134/s0022476619060131
日期:2019.6
substituent or two methyl groups at position 2 of the furanone ring and also an aryl or heteroaryl substituent at position 5 are analyzed in comparison with the literature data. Effects appearing in 1HNMRspectra, which are caused by the features of the molecular structures of these compounds are interpreted. Their crystal structure is considered and intermolecular interactions responsible for the supramolecular
SOBENINA, L. N.;SERGEEVA, M. P.;MIXALEVA, A. I.;SIGALOV, M. V.;KOROSTOVA,+, XIMIYA GETEROTSIKL. SOED.,(1990) N, S. 612-616
作者:SOBENINA, L. N.、SERGEEVA, M. P.、MIXALEVA, A. I.、SIGALOV, M. V.、KOROSTOVA,+
DOI:——
日期:——
WATER BASED ANIONIC POLYMERS FOR INKJET INKS
申请人:PENN COLOR, INC.
公开号:US20140113990A1
公开(公告)日:2014-04-24
The present invention provides a durable, external surfactant free, anionic, water based jet ink polymer which when formulated into an ink jet ink results in a printing that has an excellent adhesion to metal or plastic substrates. Such a jet ink polymer is suitable performance replacement of solvent soluble polymers currently in commercial use. The hybridized copolymer comprises a hydrophobic functional polymeric backbone comprised of a polysiloxane polymer, a polyolefin polymer, or a functional polyvinyl polymer. The hybridized copolymer also comprises a plurality of copolymeric side chains attached to the backbone, comprising a polymerizable acid-containing unsaturated monomer, and a polymerizable unsaturated monomer. The use of the inks of the present invention enhances performance criteria such as print-head open time, ink stability, and resistance to typical water based cleaners.