Réactions avec le diazométhane d'esters cinnamylidène maloniques ou cyanacétiques méthylés ou phénylés en γ des groupements fonctionnels et des malononitriles correspondants. Thermolyse des pyrazolines obtenues
The syntheses of cinnamylidene malonic or cyanacetic esters, bearing a methyl or a phenyl group in the position γ to the withdrawing groups, were achieved. The configurations of the various isomers were established and the conformations are discussed. Diazomethane adds exclusively to the α,β double bond of these dipolarophiles in only one orientation. The thermolysis of the resulting 1-pyrazoline was studied.
2000 ◽
Vol 14
(4)
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pp. 259-267
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2020 ◽
Vol 59
(9)
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pp. 6279-6286
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2014 ◽
Vol 70
(9)
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pp. o1020-o1021
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Keyword(s):
2014 ◽
Vol 70
(10)
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pp. o1092-o1093
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Keyword(s):
Keyword(s):
1974 ◽
Vol 63
(2)
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pp. C16-C18