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Part 6: Synthesis of Spiro 1,5‐Benzodiazepine Attached with Different Heterocyclic Moeities

✍ Scribed by Khodairy, A.; El‐Sayed, A. M.; Salah, H.; Abdel‐Ghany, H.

Book ID
111898210
Publisher
Taylor and Francis Group
Year
2007
Tongue
English
Weight
132 KB
Volume
37
Category
Article
ISSN
0039-7911

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## Abstract The spiro‐lactone **3** was obtained by __N__‐bromosuccinimide (NBS) oxidation of the carboxylate **2** at − 20°. When **2** was oxidized at 10° the spiro‐lactone **4** was the main product. Compound **4** was rearranged with triethylamine to the spiro‐lactone **9** whereas the stereois