Get access

Spectroscopic Identification of Dihydroxycarbene


  • This work was supported by the Fonds der Chemischen Industrie.


original image

Out and about: CO2 extrusion from simple α-keto carboxylic acids can be used to prepare hitherto unknown hydroxycarbenes. High-vacuum flash pyrolysis of oxalic acid or its monomethyl ester enabled the preparation and characterization of dihydroxy- (1) and hydroxymethoxycarbene, respectively, both of which are stabilized through π-type out-of-plane and in-plane σ conjugation (the HOMO of s-trans,s-trans-1 is shown).

Get access to the full text of this article