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Synthesis 1993; 1993(5): 463-464
DOI: 10.1055/s-1993-25880
short paper
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A New General Synthesis of Bistetrafluoroborates of 2,3,4,5-Tetrasubstituted 1,3,4-Thiadiazoliums

Nicolai M. Przheval'skii* , Igor V. Magedov, Victor N. Drozd
  • *Timiryazev Agricultural Academy, Department of Organic Chemistry, Moscow 127550, Russia
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Publikationsdatum:
17. September 2002 (online)

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A new preparative method for the synthesis of bistetrafluoroborates of 2,3,4,5-tetrasubstituted 1,3,4-thiadiazoliums 5a-e from N, N-dialkyl-N,N-dithioacylhydrazines 1a-e is reported. This reaction is extended to the synthesis of bistetrafluoroborate of 3,5-bis(N,N-dimethyliminium)-1,2,4-trithiolane (7) starting from tetramethyl-thiuram disulfide (6). The mechanism of the reaction is discussed.