Synthesis and use of ortho-(branched alkoxy)-tert-butoxybenzenes
作者:Slavko Rast、Michel Stephan、Barbara Mohar
DOI:10.1016/j.tetlet.2012.10.010
日期:2012.12
A series of sterically hindered o-(branched alkoxy)-tert-butoxybenzenes was efficiently prepared in good yields owing to a new practical and simple preparation of o-tert-butoxyphenol starting from catechol and isobutene. Use of DMF di-tert-butyl acetalreagent instead of isobutene/H2SO4 (cat.) for O-tert-butylation was very convenient in case of ortho bulky phenols affording the corresponding tert-butyl
一系列的空间位阻ø - (支链烷氧基) -叔-butoxybenzenes在由于一个新的实用和简单的制备良好的产率被有效地制备ø -叔-butoxyphenol从儿茶酚和异丁烯开始。DMF的使用二-叔丁基缩醛试剂代替异丁烯/ H 2 SO 4(催化量)为ø -叔-butylation是非常方便在的情况下,邻位笨重酚得到相应的叔丁基醚以高收率和纯度。事实证明,这种通用途径是有用的,因为o -di-没有可靠的访问权限t -BuO取代的芳烃。介绍了在拥挤的磷基化合物合成中的应用。