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Synthesis of γ,δ-Unsaturated Glycolic Acids via Sequenced Brook and Ireland−Claisen Rearrangements

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journal contribution
posted on 05.03.2010, 00:00 by Daniel C. Schmitt, Jeffrey S. Johnson
Organozinc, -magnesium, and -lithium nucleophiles initiate a Brook/Ireland−Claisen rearrangement sequence of allylic silyl glyoxylates resulting in the formation of γ,δ-unsaturated α-silyloxy acids.