Add time:09/01/2019         Source:sciencedirect.com

We describe the simple and efficient synthesis of N-substituted isoquinolin-1-one derivatives. Initiating with the coupling of benzoic acids containing vinyl ethers with different amines, followed by rapid intramolecular cyclization under acidic conditions at room temperature, N-substituted isoquinolin-1-ones were furnished in high yields. The utility of this simple and mild cyclization method was demonstrated through the practical synthesis of natural product doryanine and its analogues.

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