Ultrasound-promoted preparation of disteryl ethers catalyzed by montmorillonite K 10

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Hebei Univ, Baoding, China ^{[1
]}

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来源：

Ultrason Sonochem | / 2卷 / 83-85期

关键词：

482.2 Minerals - 753.1 Ultrasonic Waves - 801.1 Chemistry; General - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals - 804.1 Organic Compounds;

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摘要：

In the presence of montmorillonite K 10, 5(6)-unsaturated sterols (1) were heated under ultrasound at 45°C in dichloromethane for 2-5.5 h to provide 3β,3'β-5(6)/5'(6')-unsaturated disteryl ethers (2) in 35-79% yield. Meanwhile, 3α,3'α-diandrost-5-en-17-one-3-yl ether (3a) and 3α,3'α-dipregn-5-en-20-one-3-yl ether (3b) were also obtained as by-products from 3β-hydroxyl-androst-5-en-17-one (1a) and 3β-hydroxyl-pregnan-5-en-20-one (1b) respectively.

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