Platinum-Catalyzed, One-Pot Tandem Synthesis of Indoles and Isoquinolines via Sequential Rearrangement of Amides and Aminocyclization
作者:Noriko Okamoto、Kei Takeda、Reiko Yanada
DOI:10.1021/jo101347f
日期:2010.11.19
By using platinum(II) chloride as a Lewis acid catalyst, concise and efficient syntheses of indole carbamates, 1,2-dihydroisoquinoline carbamates, macrocyclic indole carbamates, indole ureas, and indole phosphoranes have been achieved via tandem Hofmann-type rearrangement of 2-alkynylbenzamides and 2-alkynylbenzylamides, nucleophilic addition of alcohols and amines to the isocyanate intermediates,
Concise One-Pot Tandem Synthesis of Indoles and Isoquinolines from Amides
作者:Noriko Okamoto、Yoshihisa Miwa、Hideki Minami、Kei Takeda、Reiko Yanada
DOI:10.1002/anie.200904960
日期:2009.12.14
Heterocyclic hot pot: Platinum(II)‐catalyzed syntheses of indoles and isoquinolines from isocyanates, which are derived from a Hofmann‐type rearrangement of amides using a hypervalent iodine reagent, are described. C2‐symmetric macrocyclic bis(indole)s can also be synthesized from transannulation of C2‐symmetric macrocyclic bis(alkyne carbamate) intermediates.