3 years ago

Boronic Acid Accelerated Three-Component Reaction for the Synthesis of α-Sulfanyl-Substituted Indole-3-acetic Acids

Boronic Acid Accelerated Three-Component Reaction for the Synthesis of α-Sulfanyl-Substituted Indole-3-acetic Acids
Takashi Ohshima, Kenji Watanabe, Hiroyuki Morimoto, Amrita Das
Boronic acid was used to accelerate a three-component reaction of indoles, thiols, and glyoxylic acids for the synthesis of α-sulfanyl-substituted indole-3-acetic acids. Boronic acid catalysis to activate the α-hydroxy group in α-hydroxycarboxylic acid intermediates and intramolecular assistance by free carboxylic acid were the keys to accelerating the product formation.

Publisher URL: http://dx.doi.org/10.1021/acs.orglett.7b02727

DOI: 10.1021/acs.orglett.7b02727

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