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Coupling and Cyclization of Sydnone Compounds
Author(s) -
Tien HsienJu,
Lee YawKuen
Publication year - 1988
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.198800010
Subject(s) - chemistry , sydnone , biphenyl , propane , ethylene , benzene , medicinal chemistry , ether , ring (chemistry) , methane , chloride , coupling reaction , organic chemistry , catalysis
Cyclization were occurred via the coupling reactions of some mercuric chloride derivatives of sydnone with LiPdCl 3 ‐CuCl 2 . A unique six‐membered ring, 3,3′‐ethylene‐4,4′‐bissydnone, was obtained by the cyclization reation of 1,2‐di[3‐(4‐chloromercuric)sydnonyl]ethane. However, the seven‐membered 3,3′‐trimethylene‐4,4′‐bissydnone and 1,3‐di[3‐(4‐chloro)sydnonyl]‐propane were obtained from the corresponding mercuric chlroide of sydnone. Onyl substitution reaction took place when 4,4′‐di[3‐(4‐chloromercuric)sydnonyl]biphenyl, 4,4′‐di[3‐(4‐chloromercuric)sydnonyl]benzene, di( p ‐[3‐(4‐chloromercuric)sydnonyl]‐phenyl}methane and, di( p ‐[3‐(4‐chloromercuric)sydnonyl]phenyl]ether were treated using the same process.