Summary.
The syntheses of several bistrimethylsilyl hydroxy alkynes and one tristrimethylsilyl hydroxy alkyne are described. Addition of lithium trimethylsilyl acetylide to mono- or bistrimethylsilylated aldehydes and ketones afforded compounds 4a–f in good to moderate yields. The products are mixtures of diastereomers; the diastereoselectivity of the reactions amounts to 53 to 68%.
Zusammenfassung.
Die Synthesen mehrerer Bistrimethylsilylhydroxyalkine und eines Tristrimethylsilylhydroxyalkins werden beschrieben. Addition von Lithiumtrimethylsilylacetylid an mono-oder bistrimethylsilylierte Aldehyde und Ketone ergab die Verbindungen 4a–f in guten bis mäßigen Ausbeuten. Die Produkte sind Mischungen von Diastereomeren und entstehen mit Diastereoselektivitäten von 53 bis 68%.
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Received April 21, 1998. Accepted (revised) July 29, 1998
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Bolourtchian, M., Zadmard, R. & Saidi, M. Synthesis of Bistrimethylsilylated Hydroxy Alkynes. Monatshefte fuer Chemie 130, 333–336 (1999). https://doi.org/10.1007/PL00010214
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DOI: https://doi.org/10.1007/PL00010214