期刊
TETRAHEDRON LETTERS
卷 43, 期 46, 页码 8367-8369出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0040-4039(02)01985-8
关键词
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A novel procedure for selective direct N,N-alkylation of the chiral Betti base was developed, and a new family of chiral ligands, (S)-1-(alpha-cycloaminobenzyl)-2-naphthols, were prepared. The ligands with five- and six-membered cyclic amines showed highly efficient asymmetric induction in the addition of diethylzine to aromatic aldehydes in 93-96% yields and 91-99%, ee. (C) 2002 Elsevier Science Ltd. All rights reserved.
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