F. Boberg et al., SULFUR-COMPOUNDS OF PETROLEUM .18. DIALKY LDIBENZOTHIOPHENES, Phosphorus, sulfur and silicon and the related elements, 79(1-4), 1993, pp. 113-121
The preparation of 2,8-, 2,6-, 2,3- and 4,6-dialkyldibenzothiophenes a
nd of the corresponding 5,5-dioxides is described. H-1-NMR-data and GC
-purities are given.