128920-68-3

Basic information

• Product Name: 1-(2,4-Dinitro-phenylamino)-4-methyl-1H-benzo[h]quinolin-2-one
• CAS NO: 128920-68-3
• Molecular Weight: 390.355
• Mol File: 128920-68-3.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 1-(2,4-Dinitro-phenylamino)-4-methyl-1H-benzo[h]quinolin-2-one(CAS DataBase Reference)
• NIST Chemistry Reference: 1-(2,4-Dinitro-phenylamino)-4-methyl-1H-benzo[h]quinolin-2-one(128920-68-3)
• EPA Substance Registry System: 1-(2,4-Dinitro-phenylamino)-4-methyl-1H-benzo[h]quinolin-2-one(128920-68-3)

Safety Data

• Hazardous Substances Data: 128920-68-3(Hazardous Substances Data)

Upstream product

• 2107-75-7 1-methyl-3H-benzo[f]chromen-3-one 
• 119-26-6 (2,4-dinitro-phenyl)-hydrazine 

Relevant articles and documents

THE REACTIVITY OF NAPHTHOPYRAN-2-ONE DERIVATIVES TOWARD NUCLEOPHILIC AND ELECTROPHILIC REAGENTS

Claisen condensation of 4-methyl(2H)naphthopyran-2-one (1) with esters, gave 4-acetonyl(2H)naphthopyran-2-one derivatives (2a-d), while compound (1) condensed with hydrazines and primary amines and gave N-(substituted)-4-methylbenzoquinoline-2(1H)-one derivatives (3a-d).Compound (1) reacted with Grignard reagents and gave alkyl (or aryl) 2-methylethyl-1-hydroxynaphthyl ketones (4a-d), while (1) reacted with P2S5 and gave 4-methyl(2H)naphthopyran-2-thione (5) and 4-methyl(2H)naphthothiopyran-2-one (6).Compound (5) reacted with Grignard reagents and gave (4a-c) too.Compound (6) reacted with Grignard reagents and gave (7).Both compounds (5 and 6) reacted with primary amines and gave compound (3).The addition of (1) to acrylonitrile gave 2-oxo(2H)naphthopyran-4-butyramide (8), while bromination of (1) gave 3,6-dibromo-4-methyl(2H)naphthopyran-2-one (9).