Tetrahedron p. 10291 - 10304 (1993)
Update date:2022-08-05
Topics:
Marinetti
Ricard
1-Menthyl substituted phosphetane oxides 4 and 6 are prepared either by starting from (menthyl)PCl2 and an appropriate olefin, or by reacting (menthyl)MgCl with a 1-chlorophosphetane. Highly selective alkylation and halogenation reactions of the corresponding anions 4' afford α-substituted derivatives in diastereomerically pure form. Reductions of the phosphetane oxides with HSiCl3.Et3N proceed with retention of configuration about the phosphorus atom. The described procedure provide an access to a wide range of optically pure phosphines of known stereochemistry.
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(1961)