Tetrahedron p. 16185 - 16194 (1997)
Update date:2022-08-04
Topics:
Alberola, Angel
Alvaro, Rocio
Ortega, Alfonso Gonzalez
Sanudo, Carmen
2-N-(Acylmethyl)aminochromones were prepared from 2-chlorochromone and α-amino ketones (hydrochloride or ketal derivatives) in ethanol/triethylamine. Their treatment with-acetic acid/pyrrolidine led to [l]benzopyrano[2,3-b]pyrrol-4(1H)-ones, which were subsequently functionalized in C2 by aromatic electrophilic substitution (acetylation, bromination or nitration).
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Doi:10.1016/S0040-4039(97)10322-7
(1997)Doi:10.1016/S0957-4166(97)00433-3
(1997)Doi:10.1139/v68-463
(1968)Doi:10.3184/030823407X262454
(2007)Doi:10.1002/ejoc.201900471
(2019)Doi:10.1016/S0040-4039(97)10500-7
(1997)