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Preparation of Alkyl 4,5-Dihydro-2 H -benz[ g ]indazole-2-carboxylates and Methyl 4,5-Dihydro-2 H -benz[ e ]indazole-2-carboxylates from Dilithiated 1-Tetralone or 2-Tetralone Carboalkoxyhydrazones and Aromatic Esters

✍ Scribed by Grant, Sally P.; Embree, Mildred C.; Downs, Jennifer R.; Townsend, Jessica D.; Beam, Charles F.


Book ID
120005476
Publisher
American Chemical Society
Year
2003
Tongue
English
Weight
88 KB
Volume
42
Category
Article
ISSN
0888-5885

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The preparation of 4,5-dihydro-2H-benz[e
✍ April J. Angel; Anne E. Finefrock; Angela R. Williams; Jessica D. Townsend; Thuy πŸ“‚ Article πŸ“… 1999 πŸ› Journal of Heterocyclic Chemistry 🌐 English βš– 270 KB

## Abstract The phenylhydrazone of 2‐tetralone was dilithiated with excess lithium diisopropylamide followed by condensation with several aromatic esters, and the resulting intermediates were acid cyclized to 4,5‐dihydro‐2__H__‐benz[__e__]indazoles.