Journal of the Chemical Society. Chemical communications p. 1466 - 1467 (1988)
Update date:2022-08-11
Topics:
Kang, Guo-Jun
Cullen, William R.
Fryzuk, Michael D.
James, Brian R.
Kutney, James P.
The imines ArC(Me)=NCH2Ph (Ar = Ph, 2-MeO-C6H4, 4-MeO-C6H4) are hydrogenated to the corresponding secondary amines at 1000 psig H2, in 1:1 C6H6/MeOH, using an in situ RhI/(R)-cycphos system (cycphos = Ph2PCH(C6H11)CH2PPh2); a maximum of 91percent enantiomeric excess (e.e.) is achieved at lower temperatures (-25 deg C) in the presence of iodide cocatalyst.
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