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Enantioselective Synthesis of Acyclic Stereotriads Featuring Fluorinated Tetrasubstituted Stereocenters

Abstract : Elaboration of enantioenriched complex acyclic stereotriads represents a challenge for modern synthesis even more when fluorinated tetrasubstituted stereocenters are targeted. We have been able to develop a simple strategy in a sequence of two unprecedented steps combining a diastereoselective aldol-Tishchenko reaction and an enantioselective organocatalyzed kinetic resolution. The aldol-Tishchenko reaction directly generates a large panel of acyclic 1,3-diols possessing a fluorinated tetrasubstituted stereocenter by condensation of fluorinated ketones with aldehydes under very mild basic conditions. The anti 1,3-diols featuring three contiguous stereogenic centers are generated with excellent diastereocontrol (typically > 99 : 1 dr). Depending upon the precursors both diastereomers of stereotriads are accessible through this flexible reaction. Furthermore, from the obtained racemic scaffolds, development of an organocatalyzed kinetic resolution enabled to generate the desired enantioenriched stereotriads with excellent selectivity (typically er > 95 : 5).
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Contributor : Gaelle Chouraqui Connect in order to contact the contributor
Submitted on : Monday, March 21, 2022 - 11:21:37 PM
Last modification on : Monday, April 4, 2022 - 4:42:44 PM


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Na Shao, Xueyang Liu, Valérie Monnier, Laurence Charles, Jean Rodriguez, et al.. Enantioselective Synthesis of Acyclic Stereotriads Featuring Fluorinated Tetrasubstituted Stereocenters. Chemistry - A European Journal, Wiley-VCH Verlag, 2022, 28 (5), ⟨10.1002/chem.202103874⟩. ⟨hal-03615869⟩



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