Nitrileketenimine tautomerism in substituted alkylidene malononitriles and alkylidene cyanoacetates: A characteristic UV absorption band


Autoria(s): Kasturi, TR; Sharma, VK; Srinivasan, A; Subrahmanyam, G
Data(s)

01/12/1974

Resumo

Several alkylidene malononitriles (1b,1d,1e,2b and4b) and alkylidene cyanoacetates (1a,2a and4a) studied exhibit a long wavelength UV absorption band around 355 nm which shows a hyperchromic effect in the presence of ethanolic alkali. This band has been assigned to the ketenimine tautomer (5). Addition of water to1b,1e and2b gives the corresponding pyridine diols (7a,7b and8a) respectively. Similarly, addition of ethanol to1e and2b gave the corresponding ethoxypyridine derivatives (7c and8b). Mechanism of formation of these compounds is discussed. Structures, as well as mechanism of formation of1c,7c and10 obtained from1b,1e and2b respectively on standing at room temperature are also discussed.

Formato

application/pdf

Identificador

http://eprints.iisc.ernet.in/23592/1/40.pdf

Kasturi, TR and Sharma, VK and Srinivasan, A and Subrahmanyam, G (1974) Nitrileketenimine tautomerism in substituted alkylidene malononitriles and alkylidene cyanoacetates: A characteristic UV absorption band. In: Tetrahedron, 29 (24). pp. 4103-4109.

Publicador

Elsevier Science

Relação

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6THR-42HXCYM-PB&_user=512776&_rdoc=1&_fmt=&_orig=search&_sort=d&_docanchor=&view=c&_acct=C000025298&_version=1&_urlVersion=0&_userid=512776&md5=3cdaf044be816991f923e2d2093a85b9

http://eprints.iisc.ernet.in/23592/

Palavras-Chave #Organic Chemistry
Tipo

Journal Article

PeerReviewed