作者:Masaki Shimizu、Shuji Ishizaki、Hisashi Nakagawa、Tamejiro Hiyama
DOI:10.1055/s-1999-2950
日期:1999.11
Reductive lithiation of 1,1,5,5-tetrakis(phenylthio)-2,2,3,3,4,4-hexamethyl-2,3,4-trisilapentane or deprotonation of 1,5-bis(phenylthio)-2,2,3,3,4,4-hexamethyl-2,3,4-trisilapentane gave 1,5-bis(phenylthio)-1,5-dilithio-2,2,3,3,4,4-hexamethyl-2,3,4-trisilapentane which was silylated with dichlorodimethylsilane or 1,2-dichloro-1,1,2,2-tetramethyldisilane to give the corresponding tetrasilacyclohexane or pentasilacycloheptane, respectively. The tetrasilacyclohexane was transformed by reductive lithiation and sequential silylation to 2,2,3,3,4,4,6,6,7,7-decamethyl-2,3,4,6,7-pentasilabicyclo[3.1.1]heptane and 2,2,3,3,4,4,6,6,7,7,8,8-dodecamethyl-2,3,4,6,7,8-hexasilabicyclo[3.2.1]octane.
1,1,5,5-四(苯硫基)-2,2,3,3,4,4-六甲基-2,3,4-三硅戊烷的还原石化作用或 1,5-双(苯硫基)-2,2,3,3,4,4-六甲基-2,3,4-三硅戊烷的去质子化作用可得到 1,5-双(苯硫基)-1,5-二硫代-2,2,3,3,4,4-六甲基-2,3,4-三硅戊烷、2,3,3,4,4-六甲基-2,3,4-三硅戊烷,用二氯二甲基硅烷或 1,2-二氯-1,1,2,2-四甲基二硅烷进行硅烷化处理,分别得到相应的四硅杂环己烷或五硅杂环庚烷。四硅环己烷通过还原性石化作用和顺序硅烷化作用转化为 2,2,3,3,4,4,6,6,7,7- 十甲基-2,3,4,6,7-五硅杂双环[3.1.1]庚烷和 2,2,3,3,4,4,6,6,7,7,8,8- 十二甲基-2,3,4,6,7,8-六硅杂双环[3.2.1]辛烷。