Synthesis p. 195 - 198 (1991)
Update date:2022-08-03
Topics:
Popic
Korneev
Nikolaev
Korobitsyna
The sodium hydride/dibenzo-18-crown-6 ether system was found to be an effective base for the synthesis of 1,3-diketones by the Claisen condensation. The use of potassium fluoride (with or without crown ether) as the base in diazo-transfer reactions extends this reaction to the synthesis of hindered diazo diketones. In the case of isomeric 1,3-diketones, the stereoselectivity of the process considerably rises.
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(1986)Doi:10.1016/j.tetlet.2008.06.059
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(1989)Doi:10.1023/A:1013849329273
(2001)Doi:10.1021/jm051023x
(2006)
