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Corrigendum to: “Unusual reaction of N-aroyl-dihydrocyclopentapyrazolidinol with ketenes: formation of 1,3,4-oxadiazoles”: [Tetrahedron 59 (2003) 4591–4601]

✍ Scribed by Constantinos A Tsoleridis; Julia Stephanidou-Stephanatou; Petros Gounaridis; Hara Zika; Minodora Pozarentzi

Book ID
108282375
Publisher
Elsevier Science
Year
2003
Tongue
French
Weight
36 KB
Volume
59
Category
Article
ISSN
0040-4020

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Unusual reaction of N-aroyldihydrocyclop
Unusual reaction of N-aroyldihydrocyclopenta-pyrazolidinol with ketenes: formation of 1,3,4-oxadiazoles
✍ Constantinos A Tsoleridis; Julia Stephanidou-Stephanatou; Petros Gounaridis; Har 📂 Article 📅 2003 🏛 Elsevier Science 🌐 French ⚖ 431 KB

1-Benzoyl-5-hydroxy-pyrazoline 1 was prepared and its reactions with ketenes, prepared in situ from the corresponding acid chlorides 3a -3d and the mixed anhydride 4, were studied. In all cases the 1,3,4-oxadiazoles 5 were isolated. In the case of compounds 3c and 3d a second diastereomeric oxadiazo