An article Three-component synthesis of 2-acyl-2,3-dihydro-4H-thiochromeno[4,3-b]furan-4-ones and their reductive rearrangement into 4H,5H-thiochromeno[4,3-b]pyran-5-ones WOS:000658094700008 published article about DERIVATIVES in [Demidov, Maxim R.; Dobrokvashina, Anastasiya N.; Osipov, Dmitry V.; Osyanin, Vitaly A.; Klimochkin, Yuri N.] Samara State Tech Univ, 244 Molodogvardeyskaya St, Samara 443100, Russia in 2021.0, Cited 15.0. Category: thiomorpholine. The Name is 3-Nitrobenzaldehyde. Through research, I have a further understanding and discovery of 99-61-6
Three-component condensation of in situ generated pyridinium acyl methylides with aromatic aldehydes and 4-hydroxythiocoumarin led to a series of 2-acyl-2,3-dihydro-4H-thiochromeno[4,3-b]furan-4-ones. The reaction proceeds diastereoselectively with the formation of trans-isomers and represents a cascade process involving the Knoevenagel condensation, carbo-Michael reaction, and intramolecular nucleophilic substitution. The subsequent redox rearrangement of 2-acyl-2,3-dihydro-4H-thiochromeno[4,3-b]furan-4-ones by the action of Zn and ZrCl4 grants access to 4H,5H-thiochromeno[4,3-b]pyran-5-ones.
Category: thiomorpholine. About 3-Nitrobenzaldehyde, If you have any questions, you can contact Demidov, MR; Dobrokvashina, AN; Osipov, DV; Osyanin, VA; Klimochkin, YN or concate me.
Reference:
Thiomorpholine – Wikipedia,
,Thiomorpholine | C4H9NS – PubChem