+ Site Statistics
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
Submit PDF Full TextSubmit PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Preparation of pyrazolo 1 5 a pyridine and 1 2 4 triazolo 1 5 a pyridine derivatives from 1 6 diaminopyridine 2 thiones

, : Preparation of pyrazolo 1 5 a pyridine and 1 2 4 triazolo 1 5 a pyridine derivatives from 1 6 diaminopyridine 2 thiones. Heterocycles (Tokyo) 27(3): 733-744

The 1,6-diaminopyridine-2-thiones (1a and 1b) react with .alpha.-halocarbonyl compounds to given the phyrido [2,1-b] [1,3,4]thiadiazinium-salts (2) which undergo base-catalyzed ring-contraction to give the pyrazolo[1,5-a]pyridines (3) or (4). The reactions of the N-amino-heterocycles (1a and 1b) with nitriles lead direcetly to [1,2,4]triazolo-[1,5-a]pyridines (5).

(PDF 0-2 workdays service)

Order PDF Full Text


Click here to order any other PDF Full Text

Accession: 006173751

PDF Full Text: Submit

Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:

Other references

Wooten, M. W.; Zhou, G.; Wooten, M. C.; Seibenhener, M. L., 1997: Transport of protein kinase C isoforms to the nucleus of PC12 cells by nerve growth factor: Association of atypical zeta-PKC with the nuclear matrix. In an effort to understand the role of protein kinase C (PKC) in nerve growth factor-induced differentiation, we studied the expression of PKC using isoform-specific antibodies. Western blot analysis on whole cell lysates showed that alpha,beta- d...

Daigo, K.; Uzu, A.; Arakawa, O.; Noguchi, T.; Seto, H.; Hashimoto, K., 1985: Isolation and some properties of neosaxitoxin from a xanthid crab Zosimus aeneus. Bulletin of the Japanese Society of Scientific Fisheries, 512: 309-313

Barry K.; Stiles J.; Maretzki A., 1990: The use of a sugarcane promoter in the construction of a monocot transfection vector. Plant Physiology (Rockville) 93(1 SUPPL): 96

Duncan, G.; De-Pont, J. J. H. H. M.; Bonting, S. L., 1971: Biochemical aspects of the visual process part 10 distribution and movements of ions in the dark adapted retina of the cuttlefish sepia officinalis. Pfluegers Archiv European Journal of Physiology 322(3): 264-277

Wang GenSheng; Gruber, H.; Smyth, P.; Pulido, O.; Rosenberg, L.; Duguid, W.; Scott, F. W., 2000: Hydrolysed casein diet protects BB rats from developing diabetes by promoting islet neogenesis. To investigate the possibility that BBdp rats were more susceptible to diet-induced changes in islet homeostasis, BBdp rats were fed an NIH-07 (NIH) or hydrolysed-casein (HC) diet from 23 to 45 days of age. Compared with the standard diet, feeding...

Washburne J.; Bocchini J.Jr; Brouillette R., 1991: A retrospective analysis of 21 months of universal screening for hepatitis b surface antigen in pregnant women and the management of their infants. Abstracts of the General Meeting of the American Society for Microbiology 91: 332

Cen, Shan; Javanbakht, Hassan; Kim, Sunghoon; Shiba, Kiyotaka; Craven, Rebecca; Rein, Alan; Ewalt, Karla; Schimmel, Paul; Musier Forsyth, Karin; Kleiman, Lawrence, 2002: Retrovirus-specific packaging of aminoacyl-tRNA synthetases with cognate primer tRNAs. The tRNAs used to prime reverse transcription in human immunodeficiency virus type 1 (HIV-1), Rous sarcoma virus (RSV), and Moloney murine leukemia virus (Mo-MuLV) are tRNA3Lys, tRNATrp, and tRNAPro, respectively. Using antibodies to the three cog...

Calder Lloyd, 1964: Geologic aspects of the Strawberry Aqueduct and associated features; Central Utah Project. This project involves tunnels, dams, and pipelines to collect water for Strawberry Reservoir. Upper Stillwater Dam Reservoir basin lies in wide glaciated Rock Creek valley underlain by downstream-dipping Precambrian quartzite and shale. A large al...

Mienis, HK., 1984: A record of Conus lithoglyphus Hwass, 1792 from the Gulf of Aqaba. Levantina, 572 No. 49

Capurro N.L.; Bonow R.O.; Lipson L.C.; Goldstein R.E.; Shulman N.R.; Epstein S.E., 1978: Effect of aspirin on collateral flow following acute coronary occlusion in dogs. Pharmacologist 20(3): 173