260265-79-0

Upstream product

• 182156-62-3 1,7-Dicarboxymethyl-4,10-di(benzyloxycarbonyl)-1,4,7,10-tetrazacyclododecane 
• 2050-16-0 (E)-4,4'-dihydroxyazobenzene 
• 325147-63-5 (E)-4,4'-bis[3-(benzyloxycarbonylamino)propoxy]azobenzene 
• 325147-65-7 1,7-di(carboxymethyl)-4,10-di(benzyloxycarbonyl)-1,4,7,10-tetraazacyclododecane 
• 162148-45-0 1,4,7,10-tetraaza-cyclododecane-1,7-dicarboxylic acid dibenzyl ester 
• 100-02-7 4-nitro-phenol 
• 260265-77-8 1,7-bis[2-oxo-2-(2-thioxo-1,3-thiazolidin-3-yl)ethyl]-4,10-di(benzyloxycarbonyl)-1,4,7,10-tetraazacyclododecane 
• 325147-70-4 (E)-4,4'-bis(3-aminopropoxy)azobenzene 

Relevant academic research and scientific papers

Selective synthesis and kinetic measurement of 1:1 and 2:2 cyclic compounds containing 1,4,7,10-tetraazacyclododecane and azobenzene units

1:1 cyclic compounds 8a-c (51-55%) and 2:2 cyclic compounds 9a-c (20-49%) containing 1,4,7,-10-tetraazacyclododecane (cyclen) and azobenzene units were selectively synthesized under UV irradiation (330 nm ?, ΔH?, and ΔS?) of 8a-c and 9a-c were studied in nonpolar media (benzene) and polar media (methanol). The cis to trans isomerization rates in the dark for these cyclic compounds increase with ring size or structural flexibility (8a ? dominates ΔG? in cyclic compounds.

Photo-regulated cyclization reactions of tetraazamacrocycles with azobenzene derivatives

The cyclization reaction between 1 and 2 was carried out in high dilution and was photochemically regulated to give 1:1 (29-33 membered rings, 52-55%) and 2:2 (58-66 membered rings, 20-49%) adducts as photo-controllable compounds. The Royal Society of Che