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Regioselective synthesis of 1,7-diprotected 1,4,7,10-tetraazacyclododecane and preparation of a dialcohol dicarboxylic macrocyclic ligand

✍ Scribed by Arnaud Dumont; Vincent Jacques; Peng Qixiu; Jean F. Desreux

Publisher: Elsevier Science
Year: 1994
Tongue: French
Weight: 309 KB
Volume: 35
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)73077-2

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✦ Synopsis

Aktnrlz The reaction of 1.4,7,10-tctraazd~yoModccanc with p-toluenenrlfonyl chloride in pyridinc or with diethyl phowhite and Ccl, in a water/CH&l, mixture yielda sclaotivcly the 1.7diprotcctcd regiokacr.

The 1.7-dipmtected tfAraax.9 cycles are interesting Starting mstcrinls. for instana for Ihe preparation of 4.lO-bis(2'-hydroxyethy1)-1,7-bi;r(o~rboxymc~y1)-1,4.7,lO-tc~~uoyclododccane.

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