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Synthesis of 2-Imino-3,4-dihydro-2H-benzoxa(thia)zolo[3,2-a]-1,3,5-triazin-4-ones(thiones) by Reaction of Benzoxa(thia)zolyl-2-guanidines with Tosyl Isocyanate and Phenyl Isothiocyanate

✍ Scribed by D.V. Krylsky; Kh.S. Shikhaliev; A.S. Solovyev

Book ID
110365599
Publisher
Springer US
Year
2001
Tongue
English
Weight
100 KB
Volume
37
Category
Article
ISSN
0009-3122

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✍ Long-Li Lai; David H. Reid; Robin H. Nicol; Jane B. Rhodes 📂 Article 📅 1994 🏛 John Wiley and Sons 🌐 English ⚖ 710 KB

## 3-Methy1-6,7-dihydrc~-SH-l, 2,4-th iadiazolo[4,5-a] pyrimidine 4a reacted with isocyanates and isothiocyanates with elimination of acetonitrile and concomitant addition of two molecules of the heterocumubne togive the2,3-disubstituted-6,7-dihydro-SH-2ah4-thia-2, 3, 4a, ia-tetraazacyclopent[cd]