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2004
Amines
Q 0120
46- 074
Asymmetric Catalytic Coupling of Organoboranes, Alkynes, and Imines with a
Removable (Trialkylsilyloxy)ethyl Group — Direct Access to Enantiomerically
Pure Primary Allylic Amines. — By use of P-chiral ferrocenyl phosphane FER as ligand enantiomerically enriched tetrasubstituted allylic amines are prepared in one step
in high yields, good enantioselectivities, and complete control of the olefin geometry.
Unsymmetrical alkynes such as (VI) give the amines with high regioselectivities. The
N-protection group is readily removed in two steps without loss of enantioselectivity.
— (PATEL, S. J.; JAMISON*, T. F.; Angew. Chem., Int. Ed. 43 (2004) 30, 3941-3944;
Dep. Chem., MIT, Cambridge, MA 02139, USA; Eng.) — Klein
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