The first method for C-devinylation of aromatic systems
作者:Sandip B. Bharate、Ramesh Mudududdla、Rohit Sharma、Ram A. Vishwakarma
DOI:10.1016/j.tetlet.2013.03.064
日期:2013.6
This Letter describes the method for C-devinylation of aromaticsystems for the first time. Vinylbenzenes on refluxing with trifluoroacetic acid produced corresponding devinylated products in excellent yields. Furthermore, 2,4,6-trimethoxy vinylbenzenes on treatment with hexamethylene tetraamine and trifluoroacetic acid exclusively produced 1,3-diformyl 2,4,6-trimethoxy benzene via tandem devinylation
The cooperative effect of Lewis pairs in the Friedel–Crafts hydroxyalkylation reaction: a simple and effective route for the synthesis of (±)-carbinoxamine
An efficient C–C bond formation strategy between aromatic/heteroaromatic π-nucleophiles and Lewis acid activated aldehydes is described. This aromatic electrophilic substitution reaction of arenes or heteroarenes is facilitated by Lewis acid AlBr3. Aromatic rings with electron donating substituents are excellent nucleophilic counterparts in this reaction, generating carbinols in excellent yields (61–94%)