Iron(III)/O<sub>2</sub>-Mediated Regioselective Oxidative Cleavage of 1-Arylbutadienes to Cinnamaldehydes
作者:Amit Bhowmik、Rodney A. Fernandes
DOI:10.1021/acs.orglett.9b03562
日期:2019.11.15
environmentally benevolent regioselective oxidative cleavage of 1-arylbutadienes to cinnamaldehydes mediated by iron(III) sulfate/O2 has been developed. The reaction offered good yields and excellent regioselectivity and showed good functional group tolerance (31 examples). The method is important, as few reports with limited substrate scope are available for such excellent oxidative cleavage of conjugated dienes
已经开发了由硫酸铁(III)/ O 2介导的1-芳基丁二烯对肉桂醛的简单,有效和环境友好的区域选择性氧化裂解。该反应提供了良好的产率和优异的区域选择性,并显示出良好的官能团耐受性(31个实施例)。该方法很重要,因为很少有报道报道可对共轭二烯进行如此出色的氧化裂解的底物范围有限。
Aqueous Wittig reactions of semi-stabilized ylides. A straightforward synthesis of 1,3-dienes and 1,3,5-trienes
作者:James McNulty、Priyabrata Das
DOI:10.1016/j.tetlet.2009.07.133
日期:2009.10
A direct synthesis of 1,3-dienes and 1,3,5-trienes from the reaction of semi-stabilized ylides and a range of saturated and unsaturated aldehydes is reported in water as solvent, employing sodium hydroxide as base. The water-soluble phosphine oxide side product is removed simply by aqueous partitioning of the organic products.