Ortho effects in organic molecules on electron impact. 20. Parallel oxygen transfers from nitro group to sulfur and acetylenic triple bond in 3-(o-nitrophenylthio)-1-propynes.
スポンサーリンク
概要
- 論文の詳細を見る
Oxygen transfers from nitro group to both the sulfur and acetylenic triple bond are noticed in parallel fragmentation pathways during the electron impact induced decompositions of 3-(<I>o</I>-nitrophenylthio)-1-propynes. Single oxygen transfer from nitro group to sulfur leads to abundant ions corresponding to <I>o</I>-nitrosobenzenesulfinyl cation and [M–SO]<SUP>+·</SUP> while a concerted double oxygen transfer to sulfur followed by ejection of SO<SUB>2</SUB> from the rearranged molecular ion affords intense quinoline radical cation. Further, a single oxygen transfer to acetylenic triple bond, followed by a simple cleavage produces intense fragments corresponding to <I>o</I>-nitrosobenzenethiol radical cation at <I>m</I>/<I>z</I> 139 and <I>o</I>-nitrosophenylthio cation at <I>m</I>/<I>z</I> 138. The proposed fragmentation pathways and ion structures are established through high-resolution data, collisioninduced dissociation (CID) mass-analyzed ion kinetic energy (MIKE) spectra, B/E linked scan spectra and chemical substitution.
- 公益社団法人 日本化学会の論文
著者
-
Rama Krishna
Department of Chemistry, Indian Institute of Technology
-
Ramana D.V.
Department of Chemistry, Indian Institute of Technology