Spiroheterocyclic Systems, I: Spiroheterocycles Related to 1-Oxa-4-thiaspiro[4,4]nonan-2-one and 1-Oxa-4-thiospiro[4,5]decan-2-one. Spiroheterocyclische Systeme, 1. Mitt.: Mit 1-Oxa-4-thiaspiro[4,4]nonan-2-on und 1-Oxa-4-thiaspiro[4,5]decan-2-on verwandte Spiroheterocyclen
โ Scribed by Maher F. El-Zohry; Ibrahim M. A. Awad; Ali A. Abdel-Hafez
- Publisher
- John Wiley and Sons
- Year
- 1993
- Tongue
- English
- Weight
- 240 KB
- Volume
- 326
- Category
- Article
- ISSN
- 0365-6233
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Assignments of Some Amidoximes, 13C NMR 1,2,4-(thiones) and Oxa(thia)diazole-5(4H)
## Abstract Ethyl 4โoxoalkanoates 1 react at ambient temperature in dry methanol in the presence of molecular sieve 3 ร in almost quantitative yield with 3โaminopropanol and 2โaminoethanol to form the bicyclic lactams __rac__โ2 and __rac__โ3, respectively. Surprisingly, the (ยฑ)โ5โalkylโ4โoxaโ1โazab
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