期刊
TETRAHEDRON-ASYMMETRY
卷 17, 期 4, 页码 590-597出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetasy.2006.02.007
关键词
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Enantioselective C-C bond formations between the sp(3) C-H bond of prochiral CH2 and terminal alkynes via the cross-dehydrogenative coupling (CDC) reaction were studied. Efficient asymmetric syntheses of alkynyl tetrahydroisoquinoline derivatives were achieved by using a catalytic amount of CuOTf together with PyBox chiral ligand. When dihydroisocluinolinium salts were used as electrophiles, the combination of CuBr/QUINAP provided the best results for asymmetric syntheses of alkynyl tetrahydroisoquinoline derivatives. The factors influencing the enantioselectivity were studied. (c) 2006 Elsevier Ltd All rights reserved.
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