Tetrahedron Letters p. 4419 - 4422 (1994)
Update date:2022-08-04
Topics:
Seerden, Jean-Paul G.
Schotte Op Reimer, Anita W. A.
Scheeren, Hans W.
Asymmetric 1,3-dipolar cycloaddition of nitrones with ketene acetals is strongly catalyzed by chiral oxazaborolidines derived from N-tosyl-L-α-amino acids. The 5,5-dialkoxyisoxazolidines are obtained regioselectivity in high yield with high stereoselectiv
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