173199-90-1

Upstream product

• 87486-35-9 1-benzyl-3,5-dichloro-1H-pyrazin-2-one 
• 173199-86-5 1-benzyl-5-chloro-3-methyl-2(1H)-pyrazinone 

Downstream Products

• 428506-72-3 S¹-[(4-benzyl-4-chloro-3,4-dihydro-3-oxo-2-pyrazinyl)methyl] ethanethioate 
• 428506-76-7 5-benzyl-1,3-dihydrothieno[3,4-c]pyridin-4(5H)-one 
• 428506-70-1 5-benzyl-1,3-dihydro-2,2-dioxothieno[3,4-c]pyridin-4(5H)-one 
• 428506-74-5 1-benzyl-5-chloro-3-[(2-propynylsulfanyl)methyl]-2(1H)pyrazinone 
• 428506-81-4 5-benzyl-1,3-dihydro-3-(4-pentenyl)-2,2-dioxothieno[3,4-c]pyridin-4(5H)-one 
• 602327-74-2 4-(5-benzyl-1,3-dihydro-2,2,4-trioxo-5H-thieno[3,4-c]pyridin-3-yl)butanenitrile 
• 602327-70-8 5-benzyl-1,3-dihydro-1-(4-pentenyl)-2,2-dioxothieno[3,4-c]pyridin-4(5H)-one 

Relevant academic research and scientific papers

Sulfolene pyridinones as precursors for pyridinone ortho-quinodimethanes and their Diels-Alder adducts

2(1H)-Pyrazinones were converted into [3,4-b] and [3,4-c] sulfolene pyridinones 4 and 5, serving as precursors for the corresponding 3,4- and 5,6-dimethylene 2(1H)-pyridinone ortho-quinodimethanes. These were trapped by in situ reaction with dienophiles. Tethering of 4 also enabled intramolecular cycloaddition.

Intramolecular Diels-Alder Reactions of 2(1H)-Pyrazinones: Synthesis of New Furo/Pyrano-pyridinones and -pyridines

2(1H)-Pyrazinones 2-5 with in 3-position either a 3- or 4-alkynyloxy side chain and 2(1H)-pyrazinones 9-10 carrying the corresponding 2- or 3-alkynyloxy(m)ethyl substituent are shown to undergo intramolecular Diels-Alder reaction.The formation of either f