Synthesis of 8,16-dimethyl- and 8,16-dimethoxy-5,13-di-t-butyl[2.2]metacyclophane-1,2,9,10-tetraone
作者:Ken-ichi Tsukamoto、Daniel A. Sahade、Masahiko Taniguchi、Tsuyoshi Sawada、Thies Thiemann、Shuntaro Mataka
DOI:10.1016/s0040-4039(99)00845-x
日期:1999.6
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. (C) 1999 Elsevier Science Ltd. All rights reserved.