Catalytic Macrocyclization of 3-Methylthietane by Re<sub>2</sub>(CO)<sub>9</sub>(SCH<sub>2</sub>CHMeCH<sub>2</sub>) and W(CO)<sub>5</sub>(SCH<sub>2</sub>CHMeCH<sub>2</sub>)
作者:Richard D. Adams、Joachim A. Queisser、John H. Yamamoto
DOI:10.1021/om960074c
日期:1996.5.14
compounds Re2(CO)9(SCH2CHMeCH2) (2) and W(CO)5(SCH2CHMeCH2), 8, have been prepared by the reactions of Re2(CO)9(NCMe) (1) and W(CO)5(NCMe) (7) with 3-methylthietane, (SCH2CHMeCH2, 3-MT). Compounds 1, 2, 7, and 8 have been found to react with SCH2CHMeCH2 at reflux to yield substantial amounts of the polythioether macrocycle 3,7,11-trimethyl-1,5,9-trithiacyclododecane (Me312S3) by a macrocyclization process
这些新化合物重新2(CO)9(SCH 2 CHMeCH 2)(2)和W(CO)5(SCH 2 CHMeCH 2),8,制备由R e的反应2(CO)9(NCMe)(1)和带有3-甲基硫杂环丁烷(SCH 2 CHMeCH 2,3 -MT)的W(CO)5(NCMe)(7)。化合物1,2,7和8已经被发现与SCH反应2 CHMeCH 2在回流下通过大环化过程产生大量的聚硫醚大环3,7,11-三甲基-1,5,9-三硫代环十二烷(Me 3 12S3),该过程由金属诱导的三个3个分子的开环环寡聚组成公吨。我3 12S3形成为两种异构体,顺式,反式,反式-3,7,11-三甲基-1,5,9-环十二碳trithiacyclododecane(Ç,吨,吨-Me 3 12S3,3)和顺式,顺式,顺式- 3,7,11-三甲基-1,5,9-三硫代环十二烷(c,c,c -Me3 12S3,4),由于该环中的甲基取代基的不同方位。还形成了少量具有通式(SCH