78939-38-5Relevant articles and documents
COMPOUNDS OF '3-(5-SUSTITUTED OXY-2,4-DINITRO-PHENYL)-2-OXO-PROPIONIC ACID ESTER', PROCESS AND APPLICATIONS THEREOF
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Page/Page column 38, (2015/01/06)
The present disclosure relates to compounds of Formula (I) and process of obtaining the same. Said compounds of Formula (I) is employed in the syntheses of pyrroloquinoline quinone (PQQ), 4,5-dioxo-4,5-dihydro-1H-pyrrolo[2,3-f]quinoline-2,7,9-tricarboxylic acid 2-allyl ester, 5-ethoxy-5-hydroxy-4-oxo-4,5-dihydro-1H-pyrrolo[2,3-f]quinoline-2,7,9-tricarboxylic acid, 5- hydroxy-6-(1,1,4-trioxo-1 lambda* 6*-1,2, 5 -thiadiazolidin-2-yl)-1H-indole-2-carboxylic acid and its pharmaceutically acceptable salts. Said syntheses of compounds via. compounds of Formula (I) as intermediates employ minimum number of steps resulting in a shorter process and has improved efficiency along with many other advantages.