Trialkylsilyl substituent effect on ring expansion of chloroalkyl dithioketals. An easy method for the preparation of 2-trialkylsilyl-1,5-dithiacyclooct-2-enes
摘要:
Silylated 2- and 3-chloroalkyl dithioketals were prepared from corresponding 2-lithio dithioketals with 1,2- and 1,3-dihaloalkanes. The functionalized 1,3-dithianes underwent an easy ring expansion reaction into 1,5-dithiacyclooct-2-enes in the presence of basic alumina in refluxing petroleum ether. (C) 2001 Elsevier Science Ltd. All rights reserved.
Trialkylsilyl substituent effect on ring expansion of chloroalkyl dithioketals. An easy method for the preparation of 2-trialkylsilyl-1,5-dithiacyclooct-2-enes
摘要:
Silylated 2- and 3-chloroalkyl dithioketals were prepared from corresponding 2-lithio dithioketals with 1,2- and 1,3-dihaloalkanes. The functionalized 1,3-dithianes underwent an easy ring expansion reaction into 1,5-dithiacyclooct-2-enes in the presence of basic alumina in refluxing petroleum ether. (C) 2001 Elsevier Science Ltd. All rights reserved.
Trialkylsilyl substituent effect on ring expansion of chloroalkyl dithioketals. An easy method for the preparation of 2-trialkylsilyl-1,5-dithiacyclooct-2-enes
作者:F Huguenot、J.-P Bouillon、C Portella
DOI:10.1016/s0040-4039(01)01641-0
日期:2001.10
Silylated 2- and 3-chloroalkyl dithioketals were prepared from corresponding 2-lithio dithioketals with 1,2- and 1,3-dihaloalkanes. The functionalized 1,3-dithianes underwent an easy ring expansion reaction into 1,5-dithiacyclooct-2-enes in the presence of basic alumina in refluxing petroleum ether. (C) 2001 Elsevier Science Ltd. All rights reserved.