Reactivity of Chlorooxachalcogenuranes: Oxidation of Sulfides to Sulfoxides Using Chlorooxaselenuranes
摘要:
The transformation of chloro between chlorooxachalcogenuranes 3 and chalcogenides 4 is described. The oxidative ability of chlorooxachalcogenuranes has been compared. Selenuranes 3a, b have been found to be good reagents for selective oxidation of sulfides to sulfoxides under mild conditions.
作者:Jack E. Baldwin、Robert M. Adlington、Mark B. Mitchell、Jeremy Robertson
DOI:10.1016/s0040-4020(01)86541-8
日期:1991.7
The synthesis of 10–15 membered α-methylene macrocyclic lactones from the functionalised allylstannanes (7e)–(7j) is described. Attempts to synthesise analogous 6–9 membered lactones proved unsuccessful, resulting instead in the production of dilactones and AIBN derived adducts.
Synthesis of spiroethers using radical cyclisations
作者:Donald S Middleton、Nigel S Simpkins、Michael J Begley、Nicholas K Terrett
DOI:10.1016/s0040-4020(01)85436-3
日期:1990.1
A variety of spiroether products, including one bis-spiro compound, are available via a simple radicalcyclisation route.
可通过简单的自由基环化途径获得多种螺醚产物,包括一种双螺化合物。
Radical reactions in synthesis: intramolecular SH2? macrocyclisations
作者:Jack E. Baldwin、Robert M. Adlington、Mark B. Mitchell、Jeremy Robertson
DOI:10.1039/c39900001574
日期:——
The synthesis of 10–15 membered α-methylene lactones 1 from the functionalised allyl stannanes 2 occurs cleanly in moderate to high yield under free radical conditions via an intramolecularSH2′ reaction.
由官能化的烯丙基锡烷2合成10-15元α-亚甲基内酯1可以在自由基条件下通过分子内S H 2'反应以中等至高收率干净地进行。
Preparation of γ- and δ-Phenylselenenyl Alcohols via Ring Cleavage of Oxetane and Oxolane
Various types of oxetanes and oxolanes can be cleaved by reaction with phenylselenide anion prepared from diphenyl diselenide and lithium aluminum hydride in dioxane.
Phenylselenide anion generated from (PhSe)2 and LiAlH4, was found to be highly reactive to various types of cyclic ethers, providing a new method to prepare γ- and δ-phenylselenenyl alcohols from oxetane and oxolane, respectively.