在-78或-20°C下用二甲基二环氧乙烷(DMD)氧化5-(1-金刚烷基)-5-叔丁基四硫杂环戊酸酯(3a)得到(1 R *,3 S *)-和(1 R *,3 R *) - 3-(1-金刚烷基)-3-叔-butyldithiirane 1-氧化物(顺式-图4a和反式- 4a中,分别地)作为最终产品。显示该反应通过逐步氧化为相应的2-氧化物,然后为2,3-二氧化物5(vic)进行。-二亚砜;后者通过低温重结晶以纯净形式分离,并且在室温下处于结晶态时相当稳定。5的结构通过X射线晶体学确定。2,3-氧化物5个物分解在溶液上方-10℃至顺式-图4a,反式-图4a,和“S 2 O”为主要产品。反应性硫物质S 2 O被2,3-二甲基-1,3-丁二烯捕获,得到4,5-二甲基-3 H,6 H -1,2-二硫辛1-氧化物。在没有二烯的情况下,S 2 O歧化为SO 2和'S 3’,其被降冰片烯捕获,得到外-降冰片烷三硫杂环戊烷(外--3
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).
Sulfenyl chloride chemistry. Precursors for diatomic sulfur transfer
作者:Imad A. Abu-Yousef、David N. Harpp
DOI:10.1016/0040-4039(94)85351-7
日期:1994.9
[(C6H5)3CSSCl] (and its dithio homolog 2 [(C6H5)3CSSSCl]) give stable addition products (ca. 85% yield) with cyclopentene and cyclohexene. When these adducts are warmed with a diene, they deliver diatomic sulfur-trapped derivatives. These tetrasulfides are quantitatively converted to the corresponding disulfide 3 with triphenylphosphine; this affords cyclic disulfides in & 50% isolated yield from the
三苯基甲硫基亚硫酰氯1 [(C 6 H 5)3 CSSCl](及其二硫代同系物2 [(C 6 H 5)3 CSSSCl])与环戊烯和环己烯形成稳定的加成产物(产率约85%)。当这些加合物被二烯加热时,它们会释放出双原子的硫捕获的衍生物。用三苯基膦将这些四硫化物定量转化为相应的二硫化物3。这提供了环状二硫化物,从二烯分离出的产率为50%。此外,已经获得了涉及二硫杂环戊烷中间体4的证据。
Does diatomic sulfur(S2) react as a free species?
作者:Kosta Steliou、Paul Salama、Xiaoping Yu
DOI:10.1021/ja00030a048
日期:1992.2
design and synthesis of stable 1,2-dithietane derivatives for the generation of diatomicsulfur (S 2 ) was undertaken. Computer-aided evaluation of enthalpic differences was used to direct the synthesis of target compounds and, although all of the compounds calculated to afford S 2 that were prepared did yield diatomicsulfur, an isolable 1,2-dithietane other than dithiatopazine failed to materialize
对用于生成双原子硫 (S 2 ) 的稳定 1,2-二硫杂环丁烷衍生物的设计和合成进行了详细研究。焓差的计算机辅助评估用于指导目标化合物的合成,尽管计算出的所有化合物均能提供所制备的 S 2 确实产生了双原子硫,但除二硫托嗪之外的可分离 1,2-二硫杂环丁烷未能实现
An S-oxide of 6-tert-butyl-6-phenylpentathiane. Structure in the crystalline state and in solution and thermal decomposition
作者:Akihiko Ishii、Hideaki Oshida、Juzo Nakayama
DOI:10.1016/s0040-4039(01)00383-5
日期:2001.4
Oxidation of 6-tert-butyl-6-phenylpentathiane with trifluoroperacetic acid gave the pentathiane 3-oxide mainly as the monooxide. The 3-oxide takes a twist conformation both in the crystallinestate and in solution. Thermal decomposition of the 3-oxide in the presence of 2,3-dimethyl-1,3-butadiene yielded both S2O- and S2-transferred products.
in the presence of primary and secondary amines afforded N-Alkyl or N,N-dialkylthioformamides 5, and similar heating of 1 in the absence of amines afforded an inseparable mixture of acyclic polysulfides 4 bearing a thioformanilide moiety on each terminal. Bisthioformanilides 4 were also converted into 5 by treating with these amines, and the thioformylation was assumed to proceed through a pathway