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).
[1 + 2] Cycloadditions of Sulfur Monoxide (SO) to Alkenes and Alkynes and [1 + 4] Cycloadditions to Dienes (Polyenes). Generation and Reactions of Singlet SO?
generation of SO under mild conditions. Thus, the SO generated underwent [1 + 2] cycloadditions to a series of alkenes and alkynes to produce thiirane oxides and thiirene 1-oxides, respectively, providing new syntheses of the sulfur-containing three-membered heterocycles. The SO also reacted with a variety of cyclic and acyclic dienes to give the corresponding 2,5-dihydrothiophene 1-oxides.
Diels-Alder 加合物由 3,4-二叔丁基噻吩 1-氧化物和乙炔二甲酸二甲酯产生,在室温下自发地挤出一氧化硫 (SO),是一种在温和条件下生成 SO 的新方法。因此,生成的 SO 与一系列烯烃和炔烃进行 [1 + 2] 环加成反应,分别生成硫杂环丁烷氧化物和硫杂环丙烷 1-氧化物,为含硫三元杂环的合成提供了新的思路。SO 还与各种环状和非环状二烯反应生成相应的 2,5-二氢噻吩 1-氧化物。
A useful precursor for sulfur monoxide transfer
作者:Imad A. Abu-Yousef、David N. Harpp
DOI:10.1016/0040-4039(94)02247-9
日期:1995.1
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。
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.