Facile Ring-Expansion Substitution Reactions of 1,3-Dithiolanes and 1,3-Dithianes Initiated by Electrophilic Reagents to Produce Monohalo-, -cyano-, -azido- and -thiocyanato-1,4-dithiins and -1,4-dithiepins
作者:Habib Firouzabadi、Nasser Iranpoor、Atefeh Garzan、Hamid�Reza Shaterian、Farzaneh Ebrahimzadeh
DOI:10.1002/ejoc.200400502
日期:2005.1
Mild and convenient methods for the high yielding ring-expansion substitution reactions of 1,3-dithiolanes and 1,3-dithianes generated from different aryl methyl ketones using different electrophilic reagents are reported. In this study, facile preparations of monohalo-, -cyano-, -azido-, -thiocyanato-1,4-dithiins and -1,4-dithiepins are described. A general mechanism is also proposed for the reactions
报告了使用不同亲电试剂从不同芳基甲基酮生成 1,3-二硫戊环和 1,3-二噻烷的高产环扩张取代反应的温和方便的方法。在这项研究中,描述了 monohalo-、-cyano-、-azido-、-thiocyanato-1,4-dithiins 和 -1,4-dithiepins 的简便制备。还提出了本文中描述的反应的一般机制。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)