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ynolate

n. (context organic chemistry English) Any anion derived from an ynol; any salt containing such an anion

Wikipedia
Ynolate

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.