Aryltriolborates as Air- and Water-Stable Bases for Wittig Olefination.
摘要:
Tetrabutylammonium aryltriolborates have been synthesized in 37-66% yield by a one-pot procedure from arylboronic acids, 1,1,1-tris(hydroxymethyl)ethane, and aqueous tetrabutylammonium hydroxide. The aryltriolborates can be used as bases in Wittig reactions of aromatic aldehydes with all three types of phosphorus ylides: stabilized and semistabilized ylides can be generated at room temperature, and nonstabilized ylides at 120 °C (bath temperature).
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关键词:
organic bases organoboron compounds phosphorus ylides tetrabutylammonium aryltriolborates Wittig olefination
DOI:
10.1055/s-0034-1378919
年份:
2015
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