241495-74-9

Upstream product

• 19249-03-7 triethylene glycol di-(p-toluenesulfonate) 
• 241495-72-7 ((2R,6S,8R)-2,8-Bis-aminomethyl-1,4,7-trioxa-10-aza-spiro[5.5]undec-10-yl)-phenyl-methanone 
• 241495-70-5 Methanesulfonic acid (2S,6S,8S)-10-benzoyl-2-methanesulfonyloxymethyl-1,4,7-trioxa-10-aza-spiro[5.5]undec-8-ylmethyl ester 
• 241495-71-6 ((2R,6S,8S)-2,8-Bis-azidomethyl-1,4,7-trioxa-10-aza-spiro[5.5]undec-10-yl)-phenyl-methanone 

Relevant academic research and scientific papers

Novel cryptand analogs incorporating a chiral spiran moiety

Macrobicyclic polyethers based on the cryptand model displaying a chirality due to a spiran junction were synthesized from diamines 7 and 8. Results of attempted direct macrobicyclisation varied with the length the αω-oligoethyleneglycol ditosylates chain used as reagent. The expected structure was obtained only for triethyleneglycol ditosylate. The complexing properties of the diaza-octaoxa ligand 11, with alkaline and ammonium cations, were measured in THF by UV-Visible spectrophotometry.