Tetrahedron Letters p. 5165 - 5168 (1987)
Update date:2022-08-02
Topics:
Colotta, Vittoria
Cecchi, Lucia
Melani, Fabrizio
Palazzino, Giovanna
Filacchioni, Guido
The correct synthesis of the title compounds 1a-b and 2a-b is described.The claimed synthesis of 2a from 2-methyl-3-chromonecarbonitrile is shown not to lead to 2a, as previously reported but to 1,4-dihydro-1-phenyl-3-methyl<1>benzopyrano<3,4-d>pyrazole-4
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Doi:10.1002/cjoc.202100472
(2021)Doi:10.1021/jo01045a050
(1963)Doi:10.1007/BF00957260
(1987)Doi:10.1002/ejic.200701252
(2008)Doi:10.1021/ol9004799
(2009)Doi:10.1002/chem.200802384
(2009)
