通过用亚硫酰氯和吡啶处理 1,8-萘二硫醇制备了三个环取代的三硫化物-2-氧化物。1,2,3-trithiane-2-氧化物环在固态下采用沙发构象,具有假轴氧和环应变的证据(周边相互作用)。在二烯存在下加热三硫化物-2-氧化物会导致正式的一氧化硫 (SO) 转移形成不饱和环状亚砜,以及可回收的 1,8-萘二硫化物。萘环上邻甲氧基或邻叔丁基取代基的存在降低了温度并增加了 SO 转移发生的速率。捕获实验和动力学研究与三线态 SO 的产生一致,然后是二烯的原位捕获。SO 的转移也发生在室温下辐照时,但亚砜的收率较低。在Pummerer 条件下,亚砜脱水得到噻吩,包括天然存在的硫紫杉烯。两种二烯在 SO 转移条件下直接形成噻吩。该方法应用于抗血小板药物波立维的正式合成。
作者:Sylvie L. Tardif、Andrzej Z. Rys、Charles B. Abrams、Imad A. Abu-Yousef、Pierre B.F. Lesté-Lasserre、Erwin K.V. Schultz、David N. Harpp
DOI:10.1016/s0040-4020(97)00555-3
日期:1997.8
The chemistry of the generation and trapping of diatomicsulfur (S2) and sulfur monoxide (SO) are reviewed with special emphasis on recent work, including initial efforts to detect and trap diatomic selenium (Se2).
adamantylideneadamantane (11), adamantylideneadamantane thiirane (12) is produced (92%). Compound 12 was treated with m-chloroperoxybenzoic acid (m-CPBA) forming adamantylideneadamantane thiirane 1-oxide (13) in 99% isolated yield. The structures of 12 and 13 were established by 1H and 13C NMR, mass spectrometry as well as by X-ray analysis. Sulfoxide 13 decomposes smoothly to deliver sulfur monoxide in good yield
当将三苯基甲亚磺酰氯(8)(或其硫代9和二硫代10的同系物)用金刚烷金刚烷(11)处理时,产生金刚烷金刚烷硫杂烷(12)。用间氯过氧苯甲酸(m-CPBA)处理化合物12,以99%的分离产率形成金刚烷内金刚烷噻吩基1-氧化物(13)。通过1 H和13 C NMR,质谱以及X射线分析确定12和13的结构。亚砜13顺利分解,以高收率将一氧化硫输送到各种二烯。
A Novel Recyclable Sulfur Monoxide Transfer Reagent
作者:Richard S. Grainger、Alberto Procopio、Jonathan W. Steed
DOI:10.1021/ol016678g
日期:2001.11.1
subsequent trapping with thionyl chloride. Heating trisulfide oxide 11 in the presence of dienes results in transfer of sulfur monoxide to form cyclic unsaturated sulfoxides 13 in good to excellent yields, along with recovery of disulfide 9. A Pummerer reaction can be used to convert the cyclic sulfoxides into thiophenes.
Effective Precursors for Sulfur Monoxide Formation
作者:Imad A. Abu-Yousef、David N. Harpp
DOI:10.1021/jo9709864
日期:1997.11.1
When triphenylmethanesulfenyl chloride (12) (or its thio 13 or dithio homolog 14) are treated with hindered olefins 15 and 16, thiiranes 10 and 11, are produced in high isolated yields (ca. 94%). Treatment of 10 and 11 with m-chloroperoxybenzoic acid (m-CPBA) leads to the formation of thiirane 1-oxides 8 and 9 (99% isolated yields). The structures of 8-11 were established by H-1 and C-13 NMR, mass spectrometry as well as by X-ray. Thermal decomposition of either 8 or 9 smoothly delivers sulfur monoxide to various 1,3-dienes giving cyclic sulfoxides in good yield. A variety of conditions were employed to optimize the yield of the trapped adducts.
Sulfur Monoxide Transfer from<i>peri</i>-Substituted Trisulfide-2-oxides to Dienes: Substituent Effects, Mechanistic Studies and Application in Thiophene Synthesis
作者:Richard S. Grainger、Bhaven Patel、Benson M. Kariuki、Louise Male、Neil Spencer
DOI:10.1021/ja108865w
日期:2011.4.20
followed by in situ trapping by diene. Transfer of SO also occurs upon irradiation at room temperature, but yields of sulfoxide are lower. Dehydration of the sulfoxides under Pummerer conditions gives thiophenes, including the naturally occurring thioperillene. Two dienes form thiophenes directly under the SO transfer conditions. The methodology is applied in a formal synthesis of the antiplatelet medication
通过用亚硫酰氯和吡啶处理 1,8-萘二硫醇制备了三个环取代的三硫化物-2-氧化物。1,2,3-trithiane-2-氧化物环在固态下采用沙发构象,具有假轴氧和环应变的证据(周边相互作用)。在二烯存在下加热三硫化物-2-氧化物会导致正式的一氧化硫 (SO) 转移形成不饱和环状亚砜,以及可回收的 1,8-萘二硫化物。萘环上邻甲氧基或邻叔丁基取代基的存在降低了温度并增加了 SO 转移发生的速率。捕获实验和动力学研究与三线态 SO 的产生一致,然后是二烯的原位捕获。SO 的转移也发生在室温下辐照时,但亚砜的收率较低。在Pummerer 条件下,亚砜脱水得到噻吩,包括天然存在的硫紫杉烯。两种二烯在 SO 转移条件下直接形成噻吩。该方法应用于抗血小板药物波立维的正式合成。