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Directed regiospecificity of 1,3-dipolar cycloaddition of 2-diazopropane to 4- and 5-substituted pyridazin-3(2H)-ones

✍ Scribed by Boris Jelen; Anton Štimac; Branko Stanovnik; Miha Tišler


Book ID
112129932
Publisher
Journal of Heterocyclic Chemistry
Year
1991
Tongue
English
Weight
262 KB
Volume
28
Category
Article
ISSN
0022-152X

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1,3-Dipolar Cycloaddition of Benzonitril
✍ Štverková, Slávka ;Žák, Zdirad ;Jonas, Jaroslav 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 English ⚖ 462 KB

## Abstract Benzonitrile oxide cycloadds to the CC bond of substituted 4,5‐dihydro‐3‐methylene‐2(3__H__)‐furanones 1a–1g. Thus, (__E__)‐1a and (__E__)‐1b are converted into the corresponding isoxazolinespirodihydrofuranones (4__RS__,5__RS__)‐2a and (4__RS__,5__RS__)‐2b, and (__E__)‐1c is converted