期刊
TETRAHEDRON LETTERS
卷 45, 期 52, 页码 9589-9592出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2004.10.154
关键词
oxazinones; N,O-acetals; asymmetric synthesis; pantolactone; chiral vinyl ether
Under Lewis acid conditions, reaction of N-Boc, O-Me acetals with the (R)-(+)-O-vinyl-pantolactone does not lead to the expected dihydrooxazine, but to the corresponding tetrahydrooxazinone, as a result of the loss of the t-Bu group. A diastereoselective and asymmetrical way to these new heterocyclic compounds is described, together with the first evidence of their ability to undergo N-acylation. (C) 2004 Elsevier Ltd. All rights reserved.
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