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Reaction of Tetraazathiapentalene and Thiadiazolopyrimidine Derivatives with Heterocumulenes: Cycloaddition and Elimination Reactions via Hypervalent Sulfur Intermediates.

✍ Scribed by Noboru Matsumara; Atsushi Ito; Masaaki Tomura; Yasuyuki Okumura; Kazuhiko Mizuno


Publisher
John Wiley and Sons
Year
2004
Weight
111 KB
Volume
35
Category
Article
ISSN
0931-7597

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Reaction of tetraazathiapentalene and th
✍ Noboru Matsumura; Atsushi Ito; Masaaki Tomura; Yasuyuki Okumura; Kazuhiko Mizuno 📂 Article 📅 2004 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 147 KB

## Abstract Tetraazathiapentalene derivative 1 reacts with heterocumulenes such as diphenylketene (2) and 2‐pyridylisothiocyanate (5) to give heterocycles 3, 6 and 7 with elimination of methylisothiocyanate. The reactions of thiadiazolopyrimidine derivatives 8a‐b with ethoxycarbonyl isothiocyanate