Sodium dispersion-mediated reductive dimerization of benzylic halides for symmetrical bibenzyls: Column-free applications to natural products by Bubwoong Kang, Tatsuro Imamura, Tetsuya Satoh

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Bemerkungen zur Synthese von 2-Nitrotoluol-6-sulfonsäure und 2-Aminotoluol-6-sulfonsäure by Alfred Courtin

“…The precursor of 2, 2-nitrotoluene- 6-sulfonylchloride (16), was synthesized from 2-amino-6-nitro-toluene (13) directly, by diazotization followed by reaction with SO2/CuCl2 and, indirectly, via diazotization and substitution to 2-nitro-6-thiocyanotoluene (14), followed successivly by reductive dimerization to the disulfide 15 and oxidative chlorination. …”
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Notiz zur Synthese von 3-Aminotoluol-2-sulfonsäure by Alfred Courtin

“…The precursor of 9,3-nitro-toluene-2-sulfonylchloride (5), was synthesized from 2-amino-3-nitrotoluene (6) by two routes: directly, via successive diazotization and reaction with SO2/CuCl2; and indirectly, by diazotization and substitution to 3-nitro-2-thiocyanotoluene (7), followed successively by reductive dimerization to the disulfide 8 and oxidative chlorination. …”
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