Preparation and Reactivity of 1,3-Bis(alkylthio)allenes and Tetrathiacyclic Bisallenes
作者:Toshio Shimizu、Kensuke Sakamaki、Daisuke Miyasaka、Nobumasa Kamigata
DOI:10.1021/jo9915675
日期:2000.3.1
3-bis(alkylthio)allenes 1 or tetrathiacyclic bisallenes 2, respectively. Thermal reactions of 1 gave thiophenes 4 and 7, benzothiepin 5, 1,2-bis(benzylidene)cyclobutane 6, thiete 8, and alpha,beta-unsaturated ketone 9, and the reactions of tetrathiacyclic bisallenes 2a gave a cyclic dimer, 1,2-bis(benzylidene)cyclobutane derivative 10, quantitatively. Irradiation of 1,3-bis(alkylthio)allenes 1 and tetrathiacyclic
由1,3-二苯丙炔和正丁基锂制备的Ph(2)C(3)二价阴离子分别与烷基硫氰酸酯或烷烃二硫氰酸酯反应,分别得到1,3-双(烷硫基)亚芳基1或四硫代双亚芳基2。1的热反应生成噻吩4和7,苯并噻吩5、1,2-双(亚苄基)环丁烷6,硫杂环丁烷8和α,β-不饱和酮9,四硫代双亚环烷基2a的反应生成环状二聚体1,定量地确定2-双(亚苄基)环丁烷衍生物10。辐照1,3-双(烷硫基)烯丙基1和四硫代环双烯丙基2a引起重排,得到炔烃18、20和21。在环状双烯丙基2a的辐照中,还发现了从dl到内消旋异构体和从内消旋到dl异构体的异构化。 。在丙二烯1和环状双丙二烯2a与二苯基重氮甲烷的反应中,