2H-Pyran-2-ones as Building Blocks in Heterocyclic Synthesis: Preparation of Pyridazines

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F01%3A63500219" target="_blank" >RIV/70883521:28110/01:63500219 - isvavai.cz</a>
Result on the web
—
DOI - Digital Object Identifier
—

Result language
angličtina
Original language name
2H-Pyran-2-ones as Building Blocks in Heterocyclic Synthesis: Preparation of Pyridazines
Original language description
2H-Pyran-2-ones and fused pyran-2-ones are important synthons and building blocks in heterocyclic synthesis. A novel reaction for the preparation of the first derivatives of pyridazino[4,3-c]azepines starting from pyrano[3,2-c]azepines and hydrazine hydrate in the presence of p-toluenesulfonic acid was already preliminary described. Further investigation of this reaction with different 3-amino-2H-pyran-2-ones and fused 3-aminopyran-2-ones yielding analogues of 1,4-dihydropyridazine-3-carboxylic acid hydrazide (1) (or its aromatised derivative) as wel as further oxidative transformations of the products 1 to 1,4-dihydropyridazine-3-carboxylates or pyridsazine-3-carboxylates by means of various oxidants (thallium(III) nitrate, copper(II) acetate, ceric(IV) ammonium nitrate, oxygen etc.).
Czech name
—
Czech description
—

Publication year
2001
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
The 18 Post-International Congress of Heterocyclic Chemistry (Post-ICHC at Sendai) and the 23 Organic Chemistry Colloquium, Sendai, Japan
ISBN
—
ISSN
—
e-ISSN
—
Number of pages
1
Pages from-to
28
Publisher name
Sendai International Center
Place of publication
Sendai
Event location
Sendai, Japonsko
Event date
Aug 4, 2001
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
—

Similar results(10)