Online article for Non-subscribers

Pay per view

Heterocycles has a pay-per-view service for Non-subscribers.
You will be able to directly purchase the full text article through PayPal.
Your purchased Paper can be downloaded after the payment is completed.
An e-mail will be sent the URL to download the paper.
If you have any questions, please contact: purchase@heterocycles.com

Price: ¥ 4,400 (Yen only)
Period: This Article can be accessed for 7 days.

Communication | Regular issue | Vol 16, No. 1, 1981, pp.43-47
Published online, 1st January, 1970
DOI: 10.3987/R-1981-01-0043
Reactions of 3-Hydrazino-5H-1,2,4-triazino[5,6-b]indoles with Trifluoroacetic Anhydride, Acetylacetone, Hexafluoroacetylacetone and Acetophenone

Krishna C. Joshi* and Pooran Chand

*Department of Chemistry, University of Rajasthan, Jaipur 302 004, India

Abstract

3-Hydrazino-5H-1,2,4-triazino[5,6-b]indole affords a tetracyclic ring system containing compound: 3-trifluoromethyl-10H-1,2,4-triazolo[4’,3’:2,3][1,2,4]triazino[5,6-b]indole with trifluoroacetic anhydride. 3-Hydrazino derivatives, react with acetylacetone, in absolute ethanol giving rise to 3-[1-(3,5-dimethylpyrazolyl)]-5H-1,2,4-triazino[5,6-b]indoles while the reaction with hexafluoroacetylacetone gives ccrresponding hydrazone instead of expected 3-[1-(3,5-bis(trifluoromethyl)pyrazolyl)]-5H-1,2,4-triazino[5,6-b]indole. 3-Hydrazino derivatives also condense with acetophenone but the resulting hydrazone does not produce thiazolidinone with mercaptoacetic acid. All the synthesized compounds have been characterized on the basis of elemental analyses and ir, pmr, 19F nmr and mass spectral studies.