Rhodium(II)-Catalyzed Alkyne Amination of Homopropargylic Sulfamate Esters: Stereoselective Synthesis of Functionalized Norcaradienes by Arene Cyclopropanation
作者:Ryan A. Brawn、Kaicheng Zhu、James S. Panek
DOI:10.1021/ol403035g
日期:2014.1.3
followed by arene cyclopropanation to afford unique tetracyclic norcaradiene products bearing a cyclic sulfamate. Products from the arene cyclopropanation (Buchner reaction) can be converted to fused cycloheptatrienes via a ring enlarging electrocyclization after nucleophilic ring opening of the cyclic sulfamate ester.
铑(II)催化的立体化学定义明确的均丙基醚的腈-炔环加成反应,然后进行芳烃环丙烷化,得到带有环状氨基磺酸盐的独特的四环降丁烷产物。芳族磺酸酯的亲核开环后,通过扩大环的电环化作用,可以将芳烃环丙烷化(布氏反应)的产物转化为稠合的环庚烯。