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Ynolates are chemical compounds with a negatively charged oxygen attached to an alkyne functionality. They were first synthesized in 1975 by Schöllkopf and Hoppe via the n-butyllithium fragmentation of 3,4-diphenylisoxazole.
Synthetically, they behave as ketene precursors or synthons.
References
Ynolate Wikipedia(Text) CC BY-SA