650625-65-3

Upstream product

• 19249-03-7 triethylene glycol di-(p-toluenesulfonate) 
• 123-08-0 4-hydroxy-benzaldehyde 
• 111550-48-2 4,4′-(((ethane-1,2-diylbis(oxy))bis(ethane-2,1-diyl))bis(oxy))dibenzaldehyde 
• 99-93-4 4-Hydroxyacetophenone 

Downstream Products

• 650625-46-0 9,12,15,18,30,33,36,39-octaoxapentacyclo-[38.2.2.2^5,8.2^19,22.2^26,29]-pentaconta-1⁽⁴²⁾,3,5,7,19,21,23,26,28,40,43,45,47,49-tetradecaene-2,25-dione 

Relevant academic research and scientific papers

Photocycloaddition of chalcones to yield cyclobutyl ditopic cyclophanes

The intramolecular photocycloaddition of chalcones to give cyclobutanes has proved to be a fast and convenient method to shrink a cyclophane ring to a tricyclic system, in order to prepare potential ditopic receptors. X-Ray results confirm the previously indicated structure for the cyclobutanes 2a (n=1, m=1), in which the cyclization occurs by a head-to-head syn ring closure. NMR results indicate that the same process occurs for the cyclobutanes 2b (n=2, m=2) and 2c (n=1, m=3).