Condensed heteroaromatic ring systems. XIX. Synthesis and reactions of 5-(tributylstannyl)isoxazoles
作者:Takao Sakamoto、Yoshinori Kondo、Daishi Uchiyama、Hiroshi Yamanaka
DOI:10.1016/s0040-4020(01)87123-4
日期:——
newly synthesized by the 1,3-dipolar cyctoadditton of nitrile oxides to tributylethynylstannane. The iodination and the palladium-catalyzed benzoylation of 5-(tributylstannyl)-3-methylisoxazolegave 5-iodo-3-methylisoxazole and 3-methyl-5-isoxazolyl phenyl ketone in satisfactory yields, respectively. The palladium-catalyzed cross-coupling reaction of the stannylisoxazole with 2-bromonitrobenzene followed
3-取代的5-(三丁基锡烷基)异恶唑是由腈类化合物的1,3-偶极环加成反应合成的新合成的三丁基乙炔基锡烷。5-(三丁基锡烷基)-3-甲基异恶唑的碘化和钯催化的苯甲酰基分别以令人满意的收率得到5-碘-3-甲基异恶唑和3-甲基-5-异恶唑基苯基酮。苯乙烯基恶唑与2-溴硝基苯的钯催化的交叉偶联反应,然后在阮内镍上进行催化氢化,从而以57%的总收率形成了2-甲基1-4(1H)-喹啉酮。