Chemistry - A European Journal p. 14397 - 14400 (2016)
Update date:2022-07-31
Topics:
Nickel, Johannes
Fernández, Maitane
Klier, Lydia
Knochel, Paul
The treatment of readily available N-alkynyl-5-iodo-6-sulfamido-pyrimidines with iPrMgCl?LiCl followed by a transmetalation with CuCN?2 LiCl produces, after intramolecular carbocupration, metalated pyrrolo[2,3-d]pyrimidines. Quenching of these pyrimidines with allylic halides or acid chlorides results in polyfunctional pyrrolo[2,3-d]pyrimidines. Further reaction with ICl and a Negishi cross-coupling, using PEPPSI-iPr as the catalyst, furnishes fully substituted N-heterocycles. A formal synthesis of the marine alkaloid rigidin A has been achieved as well as the preparation of a derivative of 7-azaserotonine, related to the natural hormone serotonin.
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