Reactivity of 2-aryl-1,3-dithiane anions towards neopentyl, neophyl and phenyl iodides. New evidence for an SRN1 mechanism
作者:Gabriela Oksdath-Mansilla、Alicia B. Peñéñory
DOI:10.1002/poc.1837
日期:2011.12
The reactions of 2‐(4‐Z‐phenyl)‐1,3‐dithiane anions (Z = H, OMe, Cl, CN) with neopentyl, neophyl and phenyl iodides were studied in DMSO, taking into consideration the effect of the Z substituent on the dithiane anions reactivity as well as on the product distribution. These substitution reactions proceed by an SRN1 mechanism with radicals and radical anions as intermediates. Two competitive pathways
考虑到Z的影响,在DMSO中研究了2-(4 - Z-苯基)-1,3-二硫醚阴离子(Z = H,OMe,Cl,CN)与新戊基,新叶和苯基碘的反应。双硫醚阴离子反应性以及产物分布上的取代基。这些取代反应通过S RN进行1以自由基和自由基阴离子为中间体的机理。取代产物的自由基阴离子可能有两种竞争途径,即电子转移(ET)到底物上产生取代产物和C–S键断裂,从而产生二配位自由基阴离子。ET是带有电子给体取代基的二噻吩阴离子与新戊基或其类似物碘化物之间反应的主要途径,可提供中等收率的取代产物(41–53%)。版权所有©2011 John Wiley&Sons,Ltd.