We report in this paper a greatly improved procedure for the formation of a range of 1-acetyl-1-methyl-2,5-divinylcyclopentanes from 1,8-bis(trimethylsilyl)octa-2,6-diene (BISTRO) and 1,2-diacetals prepared directly from biacetyl. These 1-acetyl-1-methyl-2,5-divinylcyclopentanes are building blocks for the synthesis of 2- and 3-methoxy-12-oxo-17β-vinylestranes. (© Wiley-VCH Verlag GmbH & Co. KGaA,
我们在本文中报告了一种极大改进的方法,用于从 1,8-双(三甲基甲
硅烷基)八-2,6-二烯(BISTRO)和 1-乙酰基-1-甲基-2,5-二
乙烯基环戊烷形成一系列,2-二
缩醛直接由联乙酰制备。这些 1-乙酰基-1-甲基-2,5-二
乙烯基环戊烷是合成 2- 和 3-甲氧基-12-氧代-17β-
乙烯基环戊烷的基石。(© Wiley-
VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)