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4-叔丁基苯胺置于硫酸,溴,溶剂黄146,Sodium Nitrite体系中,用 乙醇 用作溶剂,化学反应 18.75H,反应生成1,3-二溴-5-(1,1-二甲基乙基)苯
参考文献:M-三联苯-3,3"-二氧杂恶杂恶灵:固态合成,结构和溶剂包封
标题:M-三联苯-3,3"-二氧杂恶杂恶灵:固态合成,结构和溶剂包封
摘要:Oxacalix [2]的合成三联苯基[2]与由5'-的环低聚反应扩大大环孔芳烃叔丁基-(1,1':3',1"-三联苯)-3,3"-二醇1与描述了缺电子的二卤代苯和氮杂杂环.大环的结构通过NMR,Hrms光谱和x射线衍射技术进行了表征.单晶x射线分析表明,结合在oxacalix [4]芳香族骨架中的三联苯-3,3''-Dioxo单元可以采用所有三种可能的构象(i,Ii,Iii).顺式构象三联苯-3,3″-二氧杂(i和ii)发现衍生的oxacalix [4]芳香族化合物同时具有椅子和船形结构,从而产生了能够容纳氯仿溶剂分子的分子腔.然而,反式构型的三苯基-3,3''-二氧杂(III)衍生的oxacalix [4]芳香族化合物采用扭曲的椅子构象,具有狭窄的空隙空间,无法容纳任何客体分子.
Doi:10.1016/j.Tet.2013.03.035

专利信息

专利号:US-9079869-B2
优先权日:2009-03-02
标题:Chiral disulfonimides
发明人：LIST BENJAMIN; LAY FRANK; GARCIA GARCIA PILAR
权利人:LIST BENJAMIN; LAY FRANK; GARCIA GARCIA PILAR; STUDIENGESELLSCHAFT KOHLE MBH
摘要:Chiral disulfonimides having the formula I to III, n nwherein at least one of the groups A and B in the compound of formula I, C and D of the compound in formula II, and E and F of the compound in formula III is a chiral group, or E and F together form a chiral backbone,n X is C, Si, O, N or S, and n is 0, 1, 2, 3, 4, 5 or 6, where n is >1 only if X is C, and G is as defined herein, and to the organic salts, metal salts and metal complexes thereof, are suited as NMR shift reagents and as reagents for racemate splitting, and also as chiral Brønsted acid catalysts or chiral Lewis acid catalysts for activating ketones, aldehydes and alkenes, and also as catalysts in the organic synthesis.