Tetrahedron Letters p. 2461 - 2464 (1991)
Update date:2022-08-11
Topics:
Zelle
McClellan
The methylenation of a variety of catechols is described, employing cesium carbonate and bromochloromethane in dimethylformamide at 110°C or acetonitrile at reflux. The corresponding methylenedioxy derivatives are obtained in 86-97 yield. Utilization of this method provided β-hydrastine in 70% yield from its corresponding dihydroxy analog.
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Doi:10.1002/jlcr.637
(2003)Doi:10.1055/s-1995-4077
(1995)Doi:10.3987/COM-15-13326
(2015)Doi:10.1016/j.tet.2016.11.075
(2017)Doi:10.1021/jp909183x
(2010)Doi:10.1111/j.1553-2712.2001.tb00538.x
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