104516-57-6Relevant articles and documents
Zn(OTf)2-Catalyzed Formal [3 + 3] Cascade Annulation of Propargylic Alcohols with 2-Aminochromones: Accessing the Chromeno[2,3- b]pyridines
Tong, Pei,Sun, Zhou,Wang, Shutao,Zhang, Yuan,Li, Ying
, p. 13967 - 13974 (2019/10/16)
A Zn(OTf)2-catalyzed formal [3 + 3] cascade annulation strategy for the synthesis of functionalized chromeno[2,3-b]pyridines has been developed using propargylic alcohols and 2-aminochromones as the substrates. The protocol provides a convenien
Synthesis of 2,2′-diaminobischromones using a modified procedure for the rearrangement of 5-(2-hydroxyphenyl)isoxazole to 2-aminochromone
Ghosh, Tarun,Saha, Satyajit,Bandyopadhyay, Chandrakanta
, p. 1845 - 1849 (2007/10/03)
A modified procedure for the rearrangement of 5-(2-hydroxyphenyl)isoxazoles 6a-e to 2-aminochromones 8a-e was developed and this procedure was utilised in the synthesis of hitherto unreported bischromones 3a-c. The isoxazoles 6a-e were prepared regioselec
Synthesis of substituted isoxazoles and 1,3,4-oxadiazoles
Reddy, Kusukuntla Venkat,Sabitha, G.,Subba Rao, A. V.
, p. 697 - 699 (2007/10/03)
A few novel 5-(2'-hydroxyaryl)-isoxazoles 3 and 2-(aryloxymethyl)-3-mercapto-1,3,4-oxadiazoles 8 have been synthesized from the intermediate enamino ketones 2, and tested for their herbicidal activity
Benzo-γ-pyrones. Part XV. Conversion of some 4-Oxo-4H-1-benzopyran-2-carboxylic Acids into 4H-1-Benzopyran-4-ones via Isoxazoles
Basinski, W.
, p. 376 - 384 (2007/10/02)
The preparation of 5-substituted-3-isoxazolecarboxylic acids 2a-c and their transformation into the corresponding 2-aminochromones (5a-c) and 3-cyano-2-methylchromones (6a-c) is described. The structures of oximes of methylchromones were revised to isoxazoles 2d-f. The structures of the obtained compounds were proved by spectral methods (1H, 13C NMR, IR and MS). Key words: chromones, isoxazoles, NMR and MS spectra
The Reaction of S,S-Diphenylsulphilimine with Benzopyran-4-ones and Benzopyran-4-thiones
Buggle, Katherine,Fallon, Bernadette
, p. 2764 - 2784 (2007/10/02)
Benzopyran-4-ones unsubstituted at carbons 2 and 3 yield aziridines, amines and isoxazoles on treatment with diphenylsulphilimine.The product composition is temperature dependent, aziridines being the major products at room temperature and amines at highe