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2005
Oxirane derivatives
R 0030
Influence of Polymerization Degree of Poly-L-Leucine Catalyst and Substituent
on the Julia-Colonna Asymmetric Epoxidation of Benzalacetophenones.
25- 100 Effect
— Oligomerization of L-leucine N-carboxyanhydride under different reaction conditions and investigation of the resulting poly-L-leucines as the catalyst of the
Julia—Colonna asymmetric epoxidation of benzalacetophenones supports the original
speculation that a α-helical structure of the catalyst is important for high asymmetric
induction. — (TAKAGI, R.; BEGUM, S.; SIRAKI, A.; YONESHIGE, A.; KOYAMA,
K.-I.; OHKATA*, K.; Heterocycles 64 (2004) 129-141; Dep. Chem., Grad. Sch. Sci.,
Hiroshima Univ., Higashi-Hiroshima 739, Japan; Eng.) — Mais
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