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4,5-Dihydroisoxazole and 4,5-dihydro-1,2,4-oxadiazole derivatives from cycloaddition reactions of nitrile oxides to alkyl N-(diphenylmethylene)-α,β-dehydroamino acids

✍ Scribed by Cesarino Balsamini; Gilberto Spadoni; Annalida Bedini; Giorgio Tarzia; Maurizio Lanfranchi; Maria Angela Pellinghelli


Book ID
112130482
Publisher
Journal of Heterocyclic Chemistry
Year
1992
Tongue
English
Weight
458 KB
Volume
29
Category
Article
ISSN
0022-152X

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Enantioselective preparation of 3,4,5-tr
✍ Akio Kamimura; Yukio Kaneko; Ayaki Ohta; Akikazu Kakehi; Haruhiko Matsuda; Shuji 📂 Article 📅 1999 🏛 Elsevier Science 🌐 French ⚖ 241 KB

Regio-and stereoselective 1,3-dipolar cycloaddition of nitrile oxide to optically active asilyl allyl alcohol provides a useful preparation of 3,4,5-trisubstituted 4,5-dihydroisoxazoles, which are readily converted into chiral 4-substituted 5,6-dihydro-4H-[ 1,2]-oxazines in 73-100% yields on treatme