Zur Umsetzung von 3,4-Dihydro-8a-methoxy-2H-1,4-benzoxazin-6(8aH)-onen mit Diazoalkanen, 1. Mitt. |
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| Authors: | Manfred Schubert-Zsilavecz |
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| Institution: | (1) Institut für Pharmazeutische Chemie, Karl-Franzens-Universität Graz, A-8010 Graz, Österreich |
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| Abstract: | Summary 3,4-Dihydro-8a-methoxy-2H-1,4-benzoxazin-6(8aH)-ones — quinol derivatives of 2-hydroxyethylamino-1,4-benzoquinones — react with diazoalkanes to yield 2,3,9a,9b-Tetrahydro-9H-pyrazolo3,4-h]-1,4-benzoxazin-6(6aH)-ones (3). Their structures were established on basis of NMR-techniques including two-dimensional experiments. The orientation phenomena of the reaction is discussed. |
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| Keywords: | Tetrahydro-pyrazolo-benzoxazinones 1 3-Dipolar cycloaddition NMR-data |
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