Synthesis and rotational properties of a series of polyaromatic clefts
摘要:
A series of molecular clefts containing convergent functional groups has been developed. The rotational processes occurring within these molecules have been investigated by dynamic NMR experiments and these results are compared with those obtained from molecular modelling.
The first allylic carbonylation reaction of allylic acetates with aryl boronic acids has been developed.
已开发出烯丙基乙酸酯与芳基硼酸的第一个烯丙基羟酰化反应。
Synthesis of <i>Z</i>-Alkenes from Rh(I)-Catalyzed Olefin Isomerization of β,γ-Unsaturated Ketones
作者:Lian-Gang Zhuo、Zhong-Ke Yao、Zhi-Xiang Yu
DOI:10.1021/ol401607c
日期:2013.9.20
Developing olefin isomerization reactions to reach kinetically controlled Z-alkenes is challenging because formation of trans-alkenes is thermodynamically favored under the traditional catalytic conditions using acids, bases, or transition metals as the catalysts. A new synthesis of Z-alkenes from Rh(I)-catalyzed olefin isomerization of β,γ-unsaturated ketones to α,β-unsaturated ketones was developed
Decarboxylative Allylation of Glyoxylic Acids with Diallyl Carbonate
作者:Filipe Manjolinho、Matthias F. Grünberg、Nuria Rodríguez、Lukas J. Gooßen
DOI:10.1002/ejoc.201200766
日期:2012.9
ketones. The key advantage of the new reaction protocol is that preformation of the allyl esters is not required. The reaction is believed to proceed via phosphane-mediated decarboxylation of the α-oxocarboxylates, leading to acyl anionequivalents that are allylated within the coordination sphere of the palladium catalyst. Under the reaction conditions, the double bond then migrates into conjugation
Method for producing 2-sulfonylpyridine derivatives and method for producing 2-{[(2-pyridyl)methyl]thio}-1H-benzimidazole derivatives
申请人:Kuraray Co., Ltd.
公开号:US06197962B1
公开(公告)日:2001-03-06
2-Sulfonylpyridine derivatives can be industrially produced efficiently by reacting a sulfonyl cyanide derivative with an &agr;, &bgr;-unsaturated carbonyl compound and a 2-{[(2-pyridyl)methyl]thio}-1H-benzimidazole skeleton can be formed in one step in a good yield by reacting this type of the 2-sulfonylpyridine derivative with a 2-methylthio-1H-benzimidazole derivative in the presence of an organolithium compound.
Highly Enantioselective Friedel−Crafts Alkylations of Indoles with Simple Enones Catalyzed by Zirconium(IV)−BINOL Complexes
作者:Gonzalo Blay、Isabel Fernández、José R. Pedro、Carlos Vila
DOI:10.1021/ol0710820
日期:2007.6.1
Complexes of BINOL-based ligands with Zr(OtBu)4 catalyze the Friedel-Craftsalkylation reaction of indoles and pyrrole with nonchelating beta-substituted alpha,beta-enones at room temperature affording the expected products with good yields and ee above 95% in most of the studied examples.