77820-73-6

Basic information

• Product Name: dimethyl 3-methyl-5-oxo-2,3,4,5-tetrahydro-1-benzothiepin-2,2-dicarboxylate
• CAS NO: 77820-73-6
• Molecular Weight: 308.355
• Mol File: 77820-73-6.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: dimethyl 3-methyl-5-oxo-2,3,4,5-tetrahydro-1-benzothiepin-2,2-dicarboxylate(CAS DataBase Reference)
• NIST Chemistry Reference: dimethyl 3-methyl-5-oxo-2,3,4,5-tetrahydro-1-benzothiepin-2,2-dicarboxylate(77820-73-6)
• EPA Substance Registry System: dimethyl 3-methyl-5-oxo-2,3,4,5-tetrahydro-1-benzothiepin-2,2-dicarboxylate(77820-73-6)

Safety Data

• Hazardous Substances Data: 77820-73-6(Hazardous Substances Data)

Upstream product

• 77820-71-4 2-methyl-4-oxothiochroman-1-io(bismethoxycarbonyl)methanide 
• 826-86-8 2-methyl-1-thiochroman-4-one 
• 6773-29-1 dimethyl diazomalonate 

Relevant articles and documents

A NOVEL CONVERSION OF THIOCHROMAN-4-ONES TO TETRAHYDRO-1-BENZOTHIEPIN-5-ONES VIA SULFONIUM METHYLIDES

Thermal reaction of thiochroman-4-ones with dimethyl diazomalonate in the presence of cupric sulfate gave the corresponding biscarbomethoxymethylides (4) and 2,3,4,5-tetrahydro-1-benzothiepin-5-ones (5).Treatment of the sulfonium methylides (4) with triethylamine afforded (5) and/or ring opening products (6).