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Benzodiazepines. 2. Photochemical transformation to indoles

✍ Scribed by Martin Steinman; Yee-Shing Wong

Book ID
104234969
Publisher
Elsevier Science
Year
1974
Tongue
French
Weight
142 KB
Volume
15
Category
Article
ISSN
0040-4039

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✦ Synopsis

Irradiation of the l-alkyl-2,3-dihydro-l,b-bonzodiazepines la-d leads to -the corresponding indolee 2a-d. --This is a novel and preparatively useful phototr8nsform8tion. 2 An slkyl group is required in the l-position since & (R=*)3'4 and 11 (R=COCH3)4 did not undergo this chemistry. Likewise a pnitrophenyl group (&) prevented the reaction, and starting material was recovered in these cases.

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Photochemical transformation of tropone
Photochemical transformation of tropone phenylhydrazone to 2-phenylindazol
✍ T. Tezuka; A. Yanagi; T. Mukai πŸ“‚ Article πŸ“… 1970 πŸ› Elsevier Science 🌐 French βš– 245 KB

We wish to report a novel pho~o~hemical transformation of trapone phenylhydrazone (I) to 2-phenylindazole (II) and a related chemical reaction of I with lead tetraacetate.