439661-90-2Relevant academic research and scientific papers
Efficient synthesis of substituted tetrahydrothiopyrano[2,3-b]thiopyran-4, 5-diones by a double annulation strategy from dialkenoylketene dithioacetals
Pan, Wei,Dong, Dewen,Ouyang, Yan,Wu, Rigenhada,Yang, Yang,Liu, Qun
, p. 2115 - 2120 (2008/03/12)
An efficient synthetic procedure for substituted 2,3,6,7- tetrahydrothiopyrano[2,3-b]thiopyran-4,5-diones by a double annulation strategy is described. The ring systems are made in good yields from readily available dialkenoylketene dithioacetals in the p
Facile and clean synthesis of α-alkenoyl ketene-(S,S)-acetals via the aldol condensation reactions in water
Ouyang, Yan,Dong, Dewen,Pan, Wei,Zhang, Jie,Liu, Qun
, p. 10111 - 10116 (2007/10/03)
The aldol condensation reactions of α,α-diacetyl ketene-(S,S)-acetals, 1a and 1b, with aromatic aldehydes 2 in the presence of NaOH in water have been investigated. At room temperature, the base-mediated condensations proceed smoothly to afford the corres
Highly facile and stereoselective intramolecular [2+2]photocycloadditions of bis(alkenoyl)ketenedithioacetals
Joseph, Bubbly K.,Verghese, Babu,Sudarsanakumar,Deepa,Viswam, Dhanya,Chandran, Prakash,Asokan
, p. 736 - 737 (2007/10/03)
The conformational change induced by the introduction of a ketenedithioacetal moiety at C-4 of 1,7-substituted-1,6-heptadiene-3,5-diones results in favorable spatial relationships between the alkenoyl groups to effect efficient intramolecular cycloadditio
