Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

The Structure of 4//-pyran-4-ones was elucidated by microwave spectroscopy and shows (see Fig. 6.7) bond parameters of a cross-conjugated, localized cycloenone system (cf. the data for... [Pg.257]

The bond parameters of 2H-pyran-2-one (1 earlier nomenclature a-pyrone, 2-pyrone), as determined by microwave spectroscopy, correspond to an enol-lactone structure with alternately localized C-C double and single bonds, as shown in Figure 6.3 ... [Pg.306]

See other pages where Pyran microwave spectroscopy is mentioned: [Pg.628] [Pg.639] [Pg.347] [Pg.628] [Pg.639] [Pg.233] [Pg.571] [Pg.744]

See also in sourсe #XX -- [ Pg.26 , Pg.55 ]