## Abstract Treatment of difluoro or chloro fluoro‐substituted benzyl bromides 5a‐c with zinc dust in tetrahydro‐furan leads to the corresponding benzylic zinc bromides 6a‐c. These organometallics on treatment with chlorosubstituted heterocyclic esters 4A and 4B mediated by nickel catalysis undergo
✦ LIBER ✦
Synthesis of 5,8-dihydroxynaphtho[2,3-c][1,2,5]thiadiazole-6,9-dione and 6,9-dihydroxybenzo[g]quinoxaline-5,10-dione
✍ Scribed by James D. Warren; Ving J. Lee; Robert B. Angier
- Book ID
- 112125865
- Publisher
- Journal of Heterocyclic Chemistry
- Year
- 1979
- Tongue
- English
- Weight
- 651 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0022-152X
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## Abstract A series of novel 10‐amino‐9‐aryl‐2,3,4,5,6,7,9,10‐octahydroacridine‐1,8‐dione derivatives **4** were synthesized by hydrazine or phenylhydrazine and 9‐aryl‐1,8‐dioxo‐2,3,4,5,6,7,9‐heptahydroxanthene derivatives **3**, which were prepared by 5‐substituted‐1,3‐cyclohexanedione **1** and