Matched Coupling of Propargylic Carbonates with Cyclopropanols.
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Abstract |
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The ring opening-coupling reaction of cyclopropanols with propargylic carbonates affording synthetically attractive allenyl ketones has been developed. The mechanism involves the ligand-exchange reaction of in situ formed allenyl palladium methoxide with cyclopropanols followed by carbon-carbon bond cleavage and reductive elimination. The reactions proceeded smoothly under mild reaction conditions with Pd(0)/XPhos catalysis in the absence of any external base and displayed a wide scope and application to a steroidal skeleton. The efficiency of chirality transfer and synthetic utility of the allene products have also been demonstrated. |
Year of Publication |
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2018
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Journal |
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Organic letters
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Date Published |
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2018
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ISSN Number |
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1523-7060
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URL |
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https://dx.doi.org/10.1021/acs.orglett.7b03637
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DOI |
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10.1021/acs.orglett.7b03637
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Short Title |
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Org Lett
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