One-pot dialkylation of allylphenylsulfide induced by aminoalkoxides-activated NaNH2. Application to the synthesis of unsymmetrical ketones
作者:Sabine Choppin、Philippe Gros、Yves Fort
DOI:10.1016/s0040-4020(99)00481-0
日期:1999.7
aminoalkoxides, leading to new superbases, induced an efficient one-pot dialkylation of allylphenylsulfide. The regioselectivity of the reaction (α,α′ vs α,γ) was found as strongly dependent on the nature of the alkyl halide. As an application, α,γ dialkylated products were efficiently converted into the corresponding unsymmetrical ketones.
The formation of allyl sulphides by phenylthio-migration: control by silicon
作者:Ian Fleming、Ian Paterson、Andrew Pearce
DOI:10.1039/p19810000256
日期:——
a tertiary migration terminus (4)→(6). Geraniol/nerol (12) and linalool (14) have been synthesised from a common intermediate (11) using this type of reaction. Phenylthio-migration from a tertiary migration origin (17)→(3) can be controlled to a limited extent by a suitably placed silyl group, but it is easier to achieve direct β-elimination of the silyl and phenylthio-groups (17)→(18).