Improved Horner-Wadsworth-Emmons Olefination of Base Sensitive γ-Chiral  β-Ketophosphonates

Ari M. P. Koskinen; Päivi M. Koskinen

doi:10.1055/s-1993-22506

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Synlett 1993; 1993(7): 501-502
DOI: 10.1055/s-1993-22506

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Improved Horner-Wadsworth-Emmons Olefination of Base Sensitive γ-Chiral β-Ketophosphonates

Ari M. P. Koskinen^* , Päivi M. Koskinen

^*Department of Chemistry, Univeristy of Oulu, SF-90570 Oulu, Finland

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Publikationsdatum:
19. März 2002 (online)

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A new modification for the Horner-Wadsworth-Emmons reaction, utilizing K₂CO₃/MeCN as the base/solvent system, has been developed. The modification is particularly advantageous with base labile chiral phosphonates, exemplified by 1 ???? derived from L-serine.