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- W2038379323 abstract "Reaction of 2-isopentyloxy-1,3-benzodithiole with indole in acetic acid gave a 93% yield of 3-(1,3-benzodithiol-2-yl)indole (4a) which was converted to 2-(3-indolyl)-1,3-benzodithiolylium tetrafluoroborate (5a) in a 77% yield by treatment with trityl tetrafluoroborate. 5a was also prepared by reaction of indole with 2 molar amounts of 1,3-benzodithiolylium tetrafluoroborate. Treatment of 5a with triethylamine afforded the title compound 6a in 93% yield. 6a was protonated, methylated, and benzoylated at its 6-position by tetrafluoroboric acid, methyl iodide, and benzoyl chloride, respectively. Reaction of 6a with dimethyl acetylenedicarboxylate gave a 1,6-dipolar intermediate which was trapped as an adduct with ethanol. 6a was smoothly reduced by sodium borohydride to give its 5,6-dihydro derivative." @default.
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- W2038379323 date "1980-06-01" @default.
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- W2038379323 title "Heterofulvalenes. II. Synthesis and Reaction of 2,3 : 7,8-Dibenzo-1,4-dithia-6-azafulvalene" @default.
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- W2038379323 doi "https://doi.org/10.1246/bcsj.53.1661" @default.
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