Keywords
betaines
quinine methides
tertiary phosphines
X-ray single crystal diffraction
ylides
Abstract
A series of new phosphonium ylides have been synthesized by the reaction of dimethyl-(3,5-di-tert-butyl-4-oxo-2,5-cyclohexadienylidene)methylphosphonate with tertiary phosphines, the structure of dimethoxyphosphoryl-3,5-di-tert-butyl-4-hydroxyphenylmethylidene triphenylphosphorane has been confirmed by X-ray single crystal diffraction.
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