o-quinodimethanes from 3,6-dihydrobenzo[b]-1,2-oxathiin-2-oxides
作者:James L. Charlton、Tony Durst
DOI:10.1016/s0040-4039(01)81585-9
日期:——
o-tolual-dehyde via the photochemically produced 1-hydroxy-1,3-dihydrobenzo[b]thiophene-2,2-dioxide is described. Analogous syntheses of 3 and 6 substituted derivatives of the benzosultines 5 have also been carried out. The feasibility of using these benzosultines as o-quinodimethane precursors has been tested by thermalizing the phenyl sultine 5c in refluxing cyclohexane in the presence of dimethyl fumarate, dimethyl