Dibenzofurans partial rate factors

The partial rate factors for dibenzofuran relative to a benzene position, for protodetritiation, protodetrimethylsilyIation, nitration with nitric acid in acetic anhydride, and benzoylation with benzoyl chloride and aluminum chloride in nitrobenzene at 15°C are shown in Table VII along with the relevant values for diphenyl ether, It is seen that by introducing the biphenyl bond in diphenyl ether the reactivity is lowered at both the positions ortho (4-) and para (2-) to the oxygen of dibenzofuran. This lowering of reactivity has been attributed to the fact that the 2- and 4-positions, as... [Pg.63]

Partial Rate Factors r)r Electrophilic Substitution of Dibenzofuran AND Diphenyl Ether... [Pg.64]

The chemistry of dibenzofuran is that expected of a 2,2 -linked diphenyl ether. The partial rate factors for protodetritiation (370), protodetrimethylsilylation (371) (61JCS5077)... [Pg.642]

Scheme 8.17. Partial rate factors for detritiation of dibenzofuran and dibenzothiophene in trifluoroacetic acid at 70°C (6IJCS5077).

Scheme 8.19. Partial rate factors for benzoylation of dibenzofuran with benzoyl chloride at I5°C (77NKK1518).

Scheme 8.21. Partial rate factors for proliodesilylation of dibenzofuran, dibenzothio-phene, and 9-ethylcarbazole (Me0H-HC104).

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