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Synthesis of 8,16-dimethyl- and 8,16-dimethoxy-5,13-di-t-butyl[2.2]metacyclophane-1,2,9,10-tetraone

Authors
Journal
Tetrahedron Letters
0040-4039
Publisher
Elsevier
Publication Date
Volume
40
Issue
25
Identifiers
DOI: 10.1016/s0040-4039(99)00845-x

Abstract

Abstract Swern oxidation of 8,16-dimethoxy- and 8,16-dimethyl-5,13-di-t-butyl-1,2,9,10-tetrahydroxy[2.2]metacyclophane, 1 and 2, afforded 5,13-di-t-butyl-10-hydroxy-8,16-dimethoxy[2.2]metacyclophane-1,2,9-trione 3 and 4. By subsequent oxidation with DDQ, 8,16-dimethoxy- and 8,16-dimethyl-5,13-di-t-butyl[2.2]metacyclophane-1,2,9,10-tetraones, 5 and 6, were obtained.

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