Rh(II)‐Catalyzed Denitrogenative Reaction of 1,2,3‐Triazolyl Esters with Indoles or Arenes: Efficient Synthesis of Homotryptamines or Allylamines
作者:Kuntal Pal、Geetanjali S. Sontakke、Chandra M. R. Volla
DOI:10.1002/adsc.202000632
日期:2020.9.8
efficient strategy for the synthesis of structurally diverse homotryptamines and allyl amines via a Rh(II)‐catalyzed tandem reaction of 1,2,3‐triazolyl esters with either indoles or 1,3,5‐trimethoxybenzene has been developed. The reaction proceeds via Rh(II)‐catalyzed intramolecular rearrangement of triazoles into 1‐azadienes followed by regioselective nucleophilic addition. The efficiency of the current
Methyl Salicylate as a Selective Methylation Agent for the Esterification of Carboxylic Acids
作者:Meiming Luo、Si Chen、Lei Jia、Xiaonan Li
DOI:10.1055/s-0033-1340285
日期:——
the preparation of the corresponding alkyl carboxylates. Methyl salicylate is a selective and inexpensive methylating agent for the esterification of carboxylic acids with a wide range of functional group tolerance. The intramolecular hydrogenbonds between the carboxylate and hydroxyl groups in methyl salicylate are essential for the transformation. Allyl, benzyl, methallyl, and propargyl salicylates