Conversion of Amides,<i>N</i>,<i>N</i>,<i>N</i>′,<i>N</i>′-Tetramethylurea, and Esters to the Corresponding Selenoxo Compounds by Treatment with Bis(trimethylsilyl) Selenide and BF<sub>3</sub>·OEt<sub>2</sub>
作者:Yuji Takikawa、Hiroyuki Watanabe、Ryuji Sasaki、Kazuaki Shimada
DOI:10.1246/bcsj.67.876
日期:1994.3
The reactions of amides and N,N,N′,N′-tetramethylurea with (Me3Si)2Se in the presence of BF3·OEt2 afforded the corresponding slelenoxo compounds in good yields. On the other hand, selenation of ethyl and butyl benzoates in a similar manner gave benzoin and 2,3,5,6-tetraphenyl-1,4-diselenin via selenoesters. The trapping of selenoesters was also achieved by 2,3-dimethyl-1,3-butadiene to afford [4+2] cycloadducts.
酰胺和N,N,N′,N′-四甲基尿素与(Me3Si)2Se在BF3·OEt2存在下反应,得到相应的硒氧化合物,产率良好。另一方面,以类似方式对乙基和丁基苯甲酸酯进行硒化,得到了苯醇和2,3,5,6-四苯基-1,4-二硒烯,反应通过硒酯实现。通过2,3-二甲基-1,3-丁二烯捕获硒酯也成功地得到[4+2]环加成产物。