Utilization of Sugars in Organic Synthesis. Part XXV. Conversion of Thiocarbonyl into Carbonyl Group by O-S Exchange Reaction with Dibutyltin Oxide or Bistributyltin Oxide.
已经制备了多种中等大小的硫代内酯,并与亲核试剂缩合,在用甲基碘淬灭后得到烷基化硫代缩醛。在自由基条件下使用三苯基氢化锡进行还原脱硫可以快速有效地提供相应的环醚,并且在大多数情况下具有完全立体控制。该方法已通过构建短杆菌毒素 A (1) 的 B 环和 D 环模型系统以及 (±)-lauthisan 的合成得到证明
Thionation with the Reagent Combination of Phosphorus Pentasulfide and Hexamethyldisiloxane
作者:Thomas J. Curphey
DOI:10.1021/jo0256742
日期:2002.9.1
The combination of P4S10 and hexamethyldisiloxane efficiently converts esters, lactones, amides, lactams, and ketones to their corresponding thiono derivatives. In the presence of elemental sulfur, 3-oxoesters are converted to dithiolethiones by this reagent. Yields are comparable to or superior to those obtained with Lawesson's reagent. The method has the advantage that reagent-derived byproducts
Synthesis of medium-sized ring ethers from thionolactones. Applications to polyether synthesis
作者:K. C. Nicolaou、D. G. McGarry、P. K. Somers、B. H. Kim、W. W. Ogilvie、G. Yiannikouros、C. V. C. Prasad、C. A. Veale、R. R. Hark
DOI:10.1021/ja00173a013
日期:1990.8
Reductive desulfurization using triphenyltin hydride under radical conditions afforded the corresponding cyclicethers rapidly and efficiently and, in most cases, with complete stereocontrol. This methodology has been proven through the construction of model systems of rings B and D of brevetoxin A (1) and a synthesis of (±)-lauthisan
已经制备了多种中等大小的硫代内酯,并与亲核试剂缩合,在用甲基碘淬灭后得到烷基化硫代缩醛。在自由基条件下使用三苯基氢化锡进行还原脱硫可以快速有效地提供相应的环醚,并且在大多数情况下具有完全立体控制。该方法已通过构建短杆菌毒素 A (1) 的 B 环和 D 环模型系统以及 (±)-lauthisan 的合成得到证明
Conversion of esters and lactones to ethers via thionoesters and thionolactones using reductive radical desulfurization
作者:Doo Ok Jang、Seong Ho Song、Dae Hyan Cho
DOI:10.1016/s0040-4020(98)01156-9
日期:1999.3
Various thionoesters and thionolactones are readily reduced into the corresponding ethers in high isolated yields by radical desulfurization with organotin hydrides and Et3B under mild reaction conditions.
Nucleophilic additions to thionolactones. New synthetic technology for the construction of medium and large ring ethers
作者:K. C. Nicolaou、D. G. McGarry、P. K. Somers、C. A. Veale、G. T. Furst
DOI:10.1021/ja00242a041
日期:1987.4
Reaction d'oxepannethione-2 avec des alkyllithiums puis avec l'iodomethane; obtention d'alkyl-2 methylthio-2 oxepannes (le groupe methylthio est ensuite elimine par Ph 3 SnH-AIBN). Application aux thioolactones suivantes: oxocannethione-2, oxonannethione-2, oxacycloheptadecannethione-2 et perhydro pyranno [3,2-b] oxocinne- et -oxoninnethiones
反应 d'oxepannethone-2 avec des 烷基锂 puis avec l'iodomethane; 获得 d'烷基-2 甲硫基-2 oxepannes(le groupemethylthio est ensuite elimine par Ph 3 SnH-AIBN)。应用辅助硫代内酯 suvantes: oxocannethone-2, oxonannethone-2, oxacycloheptadecannethion-2 et perhydro pyranno [3,2-b] oxocinne- et -oxoninnethone
Chemistry of tetrahedral intermediates. 11. Stereochemical studies on hemiorthothiol and hemiorthothiolate tetrahedral intermediates
作者:Farid F. Khouri、Moses K. Kaloustian
DOI:10.1021/ja00281a040
日期:1986.10
Generation et scission de monothioorthoesters de differents types (acyclique, monocyclique et bicyclique)
不同类型(acyclique、monocyclique et bicyclique)的单硫代原酸酯的生成和断裂