64965-01-1Relevant academic research and scientific papers
Efficient one-pot synthesis of N-substituted 2-aminochromones, their benzo-fused derivatives, and diaminobenzodipyrandiones of two new structural classes
Roma, Giorgio,Piras, Daniela,Di Braccio, Mario,Grossi, Giancarlo
experimental part, p. 849 - 857 (2010/10/02)
N-Substituted 2-aminochromones and their benzo-fused derivatives were obtained in high yields by a new one-pot synthesis, starting from the appropriate acetamides, salicylic acid or its benzo-fused derivatives, and phosphoryl chloride. By the same reaction, from suitable dihydroxybenzenedicarboxylic acids, some compounds of two new structural classes, 2,7-diaminobenzo[1,2-b:4,5-b']dipyran-4,9-diones and 2,8-diamino-4H,6H-benzo[1,2-b:5,4-b']dipyran-4,6-diones, were synthesized. Georg Thieme Verlag Stuttgart.
Chromone studies. Part 12. Fragmentation patterns in the electron-impact mass spectra of 2-(N,N-dialkylamino)-4H-1-benzopyran-4-ones and -naphthopyran-4-ones
Kaye, Perry T.,Ramaite, Isaiah D.I.
, p. 25 - 29 (2007/10/03)
The major electron-impact mass fragmentation patterns exhibited by 2-(N,N-dialkylamino)-4H-1-benzopyran-4-ones and -naphthopyran-4-ones have been explored using a combination of low-resolution, high-resolution and B/E linked-scan data.
