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On the synthesis of siloxanes. XXIV. Nucleophilic substitution reactions of 2-functional 1,3-dioxa-2-4,7-trisilacylcloheptanes and 1,3-dioxa-2,4,8-trisilacyclooctanes

✍ Scribed by K. Rühlmann; S. Jähnichen; U. Scheim; D. Scheller


Publisher
Springer US
Year
1997
Tongue
English
Weight
732 KB
Volume
32
Category
Article
ISSN
0009-3122

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Reactions of 4-Oxoalkanoic Acids, 4. Syn
✍ Wedler, Christine ;Schick, Hans ;Scharfenberg-Pfeiffer, Doris ;Reck, Günter 📂 Article 📅 1992 🏛 John Wiley and Sons 🌐 English ⚖ 432 KB

## Abstract Ethyl 4‐oxoalkanoates 1 react at ambient temperature in dry methanol in the presence of molecular sieve 3 Å in almost quantitative yield with 3‐aminopropanol and 2‐aminoethanol to form the bicyclic lactams __rac__‐2 and __rac__‐3, respectively. Surprisingly, the (±)‐5‐alkyl‐4‐oxa‐1‐azab