77643-63-1Relevant academic research and scientific papers
Three-Component Reaction to 1,4,2-Diazaborole-Type Heteroarene Systems
Li, Jun,Daniliuc, Constantin G.,Kehr, Gerald,Erker, Gerhard
supporting information, p. 27053 - 27061 (2021/11/22)
The borane FmesBH2 reacts in a three-component reaction with an isonitrile and a small series of organonitriles to give rare examples of the class of dihydro-1,4,2-diazaborole derivatives. In a related way, annulated BN-indolizine derivatives became conveniently available, as were dihydro-1,4,2-oxaza- or thiazaborole derivatives. The nucleophilic framework of a dihydro-1,4,2-diazaborole example allowed for an uncatalyzed acylation reaction. It also served as a 1,3-dipolar reagent and underwent a [3+2] cycloaddition/[4+2] cycloreversion sequence when treated with methyl propiolate to give the respective pyrrole product. The [3+2] cycloaddition product of a dihydro-1,4,2-diazaborole derivative with N-phenylmaleimide was isolated and its heterobicyclo[2.2.1]heptane derived structure characterized by X-ray diffraction.
Generation of Azomethine Ylides via the Desilylation Reaction of Immonium Salts
Padwa, Albert,Haffmanns, Gunter,Tomas, Miguel
, p. 3314 - 3322 (2007/10/02)
Generation of intermediates having azomethine ylide reactivity was achieved by the reaction of several ethanol or thioimidate derivatives with methyl iodide followed by treatment of the resulting imine with (trimethylsilyl)methyl triflate.Desilylation of
Addition de cyano-2 aziridines a quelques alcynes; obtention de pyrroles
Merah, Boumediene,Texier, Fernand
, p. 552 - 558 (2007/10/02)
Addition of the α-bromocinnamonitrile to primary amines (Cromwell method) leads to 2-cyano-3-phenyl-N-alkyl-aziridines, but the formation of the isomeric enamines always competes with this reaction.These aziridines, which are potential azomethine-ylids, a
