Electrochemical oxidative radical cascade cyclization of olefinic amides and thiophenols towards the synthesis of sulfurated benzoxazines, oxazolines and iminoisobenzofurans
containing N and O are important structures in pharmaceuticals, agrochemicals and functional molecules. The synthesis of these compounds usually requires complex substrates and harsh reaction conditions. Herein, we introduce a mild and efficient electrochemical oxidative strategy to construct benzoxazines, oxazolines and iminoisobenzofurans without the requirement of a transition-metal catalyst and an
含 N 和 O 的杂环是药物、农用化学品和功能分子中的重要结构。这些化合物的合成通常需要复杂的底物和苛刻的反应条件。在此,我们引入了一种温和有效的电化学氧化策略来构建苯并恶嗪、恶唑啉和亚氨基异苯并呋喃,而无需过渡金属催化剂和外部氧化剂。在一个简单的未分开的细胞中,各种烯酰胺和苯硫酚/二硒化物反应生成 69 个硫醇化和硒化杂环的例子,产率高达 83%。此外,这种自由基级联反应为一步构建 C-S/C-Se 和 C-O 键提供了一种简便的方法。
Zur kenntnis von tris(alkyl- und -arylseleno)boranen
作者:Max Schmidt、H.D. Block
DOI:10.1016/s0022-328x(00)86199-9
日期:1970.11
Aliphatic selenols and selenophenol form tris(organoseleno)boranes with the boron halides, BCl3, BBr3 and BI3. They may also be synthesized from boron halides and sodium organoselenolate in heterogeneous reactions. Reactions of these compounds, easily formed by this method, with some nucleophiles and electrophiles are reported.
Diiod(methylthio)gallan. Darstellung und reaktivität
作者:Gerhard G. Hoffmann、Peter Resch
DOI:10.1016/0022-328x(85)80266-7
日期:1985.11
Different synthetic routes for the preparation of diiodo(methylthio)gallane are given. Some reactions of this compound with Lewis bases, such as O(CH3)2, S(CH3)2, S2(CH3)2, N(CH3)3, P(CH3)3, and other compounds, such as CH3I, CH3OH, C2H5OH, C2H5SH, i-C3H7SH, and C2H5SeH are investigated. Spectra and some physical and chemical properties of the new compounds are reported. The structure of diiodo(methylthio)gallane
给出了制备二碘(甲硫基)加仑的不同合成途径。该化合物与路易斯碱的一些反应,例如O(CH 3)2,S(CH 3)2,S 2(CH 3)2,N(CH 3)3,P(CH 3)3和其他化合物,例如CH 3 I,CH 3 OH,C 2 H 5 OH,C 2 H 5 SH,iC 3 H 7 SH和C 2 H 5对SeH进行了研究。报道了新化合物的光谱和一些理化性质。考虑到该分子在溶液和晶体形式中的一些有趣的差异,讨论了二碘(甲硫基)gallane的结构。
Recyclable 1,2-bis[3,5-bis(trifluoromethyl)phenyl]diselane-catalyzed oxidation of cyclohexene with H<sub>2</sub>
O<sub>2</sub>
: a practical access to <i>trans</i>
-1,2-cyclohexanediol
作者:Lei Yu、Jun Wang、Tian Chen、Yuguang Wang、Qing Xu
DOI:10.1002/aoc.3175
日期:2014.8
1,2‐Bis[3,5‐bis(trifluoromethyl)phenyl]diselane‐catalyzed oxidation of cyclohexene by hydrogen peroxide affords a quick, clean and practical access to the important compound trans‐1,2‐cyclohexanediol under mild conditions. The highly atom‐economic properties, clean procedures, high reaction concentration, short reaction time, mild conditions and eco‐friendly, recyclable and low loading catalysts facilitate
Vinylselenols and vinyltellurols have been prepared by slow
addition of tributyltin hydride to the corresponding divinyldiselenide or
divinylditelluride in tetraglyme.