153648-98-7

Basic information

• Product Name: 2H-1-Benzopyran-2-one, 8-hydroxy-4-methyl-7-(phenylamino)-
• CAS NO: 153648-98-7
• Molecular Formula: C16H13NO3
• Molecular Weight: 267.284
• Mol File: 153648-98-7.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: 2H-1-Benzopyran-2-one, 8-hydroxy-4-methyl-7-(phenylamino)-(CAS DataBase Reference)
• NIST Chemistry Reference: 2H-1-Benzopyran-2-one, 8-hydroxy-4-methyl-7-(phenylamino)-(153648-98-7)
• EPA Substance Registry System: 2H-1-Benzopyran-2-one, 8-hydroxy-4-methyl-7-(phenylamino)-(153648-98-7)

Safety Data

• Hazardous Substances Data: 153648-98-7(Hazardous Substances Data)

Upstream product

• 2378-86-1 4-methylbenzyltriphenylphosphonium bromide 
• 153649-00-4 7-(methoxyimino)-4-methyl-2H-chromene-2,8(7H)-dione 
• 603-35-0 triphenylphosphine 
• 1099-45-2 ethyl (triphenylphosphoranylidene)acetate 
• 21382-82-1 (carbethoxyethylidene)triphenylphosphorane 
• 26599-08-6 ethyl 3-phenyl-2-(triphenylphosphoranylidene)propanoate 
• 22592-13-8 ethyl 2-(triphenylphosphoranylidene)butanoate 
• 20913-05-7 (Benzoylmethylene)triphenylphosphorane 
• 21204-67-1 methyl (triphenylphosphoranylidene)acetate 
• 7354-47-4 (E)-2-butenyltriphenylphosphonium chloride 
• 3462-97-3 (4-methoxybenzyl)triphenylphosphonium bromide 
• 1100-88-5 benzyltriphenylphosphonium chloride 

Relevant articles and documents

Reactions of 2-(methoxyimino)benzen-1-ones with α-alkylethoxycarbonylmethylene(triphenyl)phosphoranes

The title 2-(methoxyimino)benzen-1-ones react with α-alkylethoxycarbonylmethylene(triphenyl)phosphoranes to give 2H-[b][1,4]benzoxazine derivatives along with benzoxazole and indole derivatives. Reaction mechanisms to explain the formation of products obt

Reactions of 7-(Methoxyimino)-4-methyl-2H-chromene-2,8(7H)-dione with Phosphorus Ylides. Synthesis of 2-Substituted 6-Methyl-8H-benzopyranooxazol-8-ones

7-(Methoxyimino)-4-methyl-2H-chromene-2,8(7H)-dione (3) reacts with phosphonium salts 1a-c, 8a, b under phase-transfer catalysis conditions to afford the title 2-substituted 6-methylbenzopyranooxazol-8-ones 5a-c, 10a, b, respectively, along with compound 6, instead of the expected Wittig reaction products.However, the reaction of 3 with the stable phosphorus ylides 11a-c in addition to the corresponding benzopyranooxazoles 12a-c and compound 6 affords in the last case compound 16 as well according to a sequence involving an initial Wittig reaction between 11c and 3. - Key Words: Oxazolocoumarins / Phosphorus ylides / 2H-Chromene-2,8(7H)-dione, 7-(methoxyimino)-4-methyl- / Wittig reaction / Benzopyranooxazol-8-ones