556825-71-9

Basic information

• Product Name: 4,6-diacetyl-3-phenyl-3,4-dihydrothieno[2,3-b]pyrazin-2(1H)-one
• Synonyms: 4,6-diacetyl-3-phenyl-3,4-dihydrothieno[2,3-b]pyrazin-2(1H)-one
• CAS NO: 556825-71-9
• Molecular Weight: 314.365
• Mol File: 556825-71-9.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 4,6-diacetyl-3-phenyl-3,4-dihydrothieno[2,3-b]pyrazin-2(1H)-one(CAS DataBase Reference)
• NIST Chemistry Reference: 4,6-diacetyl-3-phenyl-3,4-dihydrothieno[2,3-b]pyrazin-2(1H)-one(556825-71-9)
• EPA Substance Registry System: 4,6-diacetyl-3-phenyl-3,4-dihydrothieno[2,3-b]pyrazin-2(1H)-one(556825-71-9)

Safety Data

• Hazardous Substances Data: 556825-71-9(Hazardous Substances Data)

Upstream product

• 24461-61-8 phenylglycine methyl ester 
• 556825-69-5 methyl 2-[(5-acetyl-3-nitro-2-thienyl)amino]phenylacetate 
• 42456-75-7 5-acetyl-2-chloro-3-nitrothiophene 
• 75-36-5 acetyl chloride 
• 556825-70-8 6-acetyl-3-phenyl-3,4-dihydrothieno[2,3-b]pyrazin-2(1H)-one 

Relevant articles and documents

Synthesis of thieno[2,3-b]pyrazines via an acylation-deacylation process of 3,4-dihydro precursors

In the first step 3, 4-dihydrothieno[2,3-b]pyrazines (1, 2 and 4) were N-acylated by the acyl chlorides followed by a deacylation process mediated by triethylamine to give thieno[2,3-b]pyrazines. In a final rection the excess of the appropriate acyl chlor