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Dicyano(7‐methyl‐6‐oxo‐6 H ‐dibenzo[ b , d ]pyran‐9‐yl)methanide Salts via a Multicomponent Reaction
Author(s) -
Khoobi Mehdi,
Ramazani Ali,
Foroumadi Alireza,
Souldozi Ali,
Ślepokura Katarzyna,
Lis Tadeusz,
Mahyari Amir,
Shafiee Abbas,
Joo Sang Woo
Publication year - 2013
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.201200187
Subject(s) - chemistry , pyran , malononitrile , medicinal chemistry , benzopyran , salt (chemistry) , bicyclic molecule , stereochemistry , organic chemistry , catalysis
Dialkylammonium dicyano(7‐methyl‐6‐oxo‐6 H ‐dibenzo[ b , d ]pyran‐9‐yl)methanides 4a – 4j are obtained in good yields via a simple reaction between 3‐acetylcoumarins (=3‐acetyl‐2 H ‐1‐benzopyran‐2‐ones) 1 and malononitrile ( 2 ) in EtOH ( Table 1 ). In this reaction, a charge‐separated zwitterionic salt is formed.