A New Convenient, Efficient, and Regioselective Synthesis of 1,3-Diaryl- 1,3-dihalopropanes
作者:George Kabalka、Zhongzhi Wu、Yuhong Ju
DOI:10.1055/s-2004-829191
日期:——
Reactions of aryl aldehydes with styrenes in the presence of boron trihalides produce 1,3-diaryl-1,3-dihalopropanes in excellent yields.
芳基醛与苯乙烯在三卤化硼存在下反应,生成1,3-二芳基-1,3-二卤丙烷,产率极高。
Boron trihalide-promoted addition of aryl aldehydes to styrenes. A new convenient and highly efficient synthesis of 1,3-dihalo-1,3-diarylpropanes
作者:George W Kabalka、Zhongzhi Wu、Yuhong Ju
DOI:10.1016/s0040-4039(01)01125-x
日期:2001.8
Reactions of aryl aldehydes with styrenes in the presence of borontrichloride in CH2Cl2 at 0°C produce 1,3-dichloro-1,3-diarylpropanes in excellent yields. Reactions carried out using boron tribromide generate the corresponding 1,3-dibromo-1,3-diarylpropane in good yields.
Lewis Acid Mediated Reactions of Aldehydes with Styrene Derivatives: Synthesis of 1,3-Dihalo-1,3-diarylpropanes and 3-Chloro-1,3-diarylpropanols
作者:George W. Kabalka、Zhongzhi Wu、Yuhong Ju、Min-Liang Yao
DOI:10.1021/jo051298k
日期:2005.12.1
The reactions of aryl aldehydes with styrene derivatives, mediated by various boron Lewis acids, were investigated. 1,3-Dihalo-1,3-diarylpropanes were obtained in high yields with boron trihalides, while 3-chloro-1,3-diarylpropanols were obtained in good to excellent yields with phenylboron dichloride. Reactions involving nonenolizable aliphatic aldehydes, trans-cinnamaldehyde, and β-substituted styrenes