91529-76-9

Upstream product

• 113378-74-8 (Z)-2-(1,3-Dithiolan-2-yliden)-3,3-dimethylbutannitril-S,S-oxid 
• 622-29-7 N-Benzylidenemethylamine 
• 91529-47-4 3,3-Dimethyl-2-(4-oxo-1,3-dithietan-2-yliden)butyronitril 
• 17972-13-3 p-methylbenzylidene-methylamine 
• 13114-23-3 4-methoxybenzyl-N-methylimine 
• 113354-25-9 (Z)-2-(1,3-Dithiolan-2-yliden)-3,3-dimethylbutannitril-S-oxid 

Relevant academic research and scientific papers

Thioketene Syntheses, VIII. - Thioketenes by Cycloreversion of 1,3-Dithiolane Derivatives

2-Alkylidene-1,3-dithiolanes are transformed into S,S-dioxides 1 and S-ethyl- 2 or S-arylsulfonium salts 3.After deprotonation at C-5 they form in a cycloreversion thioketenes 5, which can be trapped as thioamides 17, 18.The stabilized thioketenes 5e,i-k afford 1:1 cycloadducts 24a, b, 27a-d with azomethines; in addition, thioketene 5j provides a dimer 28j, which was characterized by an X-ray structural investigation.

1-Cyanoalkylidene-substituted 1,3-Dithietanones as Cyanothioketene Equivalents. Conversion into 1,3,5-Dithiazin-4-ones and 2-Azetidinethiones

Thiolation of 3,3-dichloroacrylonitriles 1 leads to dithiolates 3, which can be alkylated to give ketene dithioacetals 5 or acylated with phosgene to yield the title compounds 8. tert-Butyl(cyano)thioketene (9c) formed via cycloreversion of 8c was f