期刊
SYNLETT
卷 -, 期 13, 页码 2033-2036出版社
GEORG THIEME VERLAG KG
DOI: 10.1055/s-0030-1258485
关键词
allenylation; propargylation; hydrazones; green chemistry; chemoselectivity
资金
- Japan Society for the Promotion of Science (JSPS)
- University of Tokyo, MEXT, Japan
Metal-hydroxide-catalyzed addition reactions of hydrazonoester with allenylboronate in aqueous media are described. The propargyl adduct was obtained selectively by using copper(II) hydroxide, whereas the allenyl adduct was produced preferentially using bismuth(III) hydroxide in water-DMF (1:3). The reactions proceeded smoothly in pure water without the use of any organic solvents by addition of a small amount (1.7 mol%) of sucrose.
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