期刊
SYNLETT
卷 -, 期 1, 页码 45-48出版社
GEORG THIEME VERLAG KG
DOI: 10.1055/s-2003-43360
关键词
chromane; indium; intramolecular allenylation reactions; synthesis; cyclizations
Starting from salicylaldehydes and 1,4-dibromo-2-butyne, preparation of chromane derivatives has been investigated. After attaching the bromobutynyl tether followed by intramolecular allenylation of aldehydes (or ketones) promoted by indium in aqueous (or organic) media, the chromane derivatives with allenic moiety have been efficiently constructed. The direct one-pot preparation of the chromanes has also been achieved.
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