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2004
Enantioselective syntheses
O 0031
Studies on Catalytic Asymmetric Nozaki—Hiyama Propargylation. — The title
proceeds with good to excellent enantioselectivity using Cr-(I) complexes
50- 030 reaction
derived from ligands (I) as a catalytic system. Changing from (Ia) to (Ib) increases the
enantioselectivity and affords the alcohol with the opposite configuration. The reaction
proceeds without (I), producing the allenyl alcohol as a minor product. It fails when
propargyl chloride is used. — (INOUE, M.; NAKADA*, M.; Org. Lett. 6 (2004) 17,
2977-2980; Dep. Chem., Sch. Sci. Eng., Waseda Univ., Shinjuku, Tokyo 169, Japan;
Eng.) — Steudel
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