Funktionelle Derivate von Phenoxyplienoxypropionsäuren und ihre herbizide Wirksamkeit / Derivatives of Phenoxyphenoxypropionic Acids and their Herbicidal Activity
Derivates of phenoxyphenoxypropionic Acids are herbicids with high activity. Methods to synthesis these compounds are reviewed. Relationship between structure and herbicidal activity are discussed.
Sustainable Radical Cascades to Synthesize Difluoroalkylated Pyrrolo[1,2-<i>a</i>]indoles
作者:Honggui Huang、Menglin Yu、Xiaolong Su、Peng Guo、Jia Zhao、Jiabing Zhou、Yi Li
DOI:10.1021/acs.joc.7b03017
日期:2018.2.16
We disclose herein a photocatalytic difluoroalkylation and cyclization cascade reaction of N-(but-2-enoyl)indoles with broad substrate scopes in up to 90% isolated yield. This method provides sustainable and efficient access to synthesize difluoroalkylated pyrrolo[1,2-a]indoles with a quaternary carbon center under mild conditions.
我们在此公开了N-(丁-2-烯酰基)吲哚具有宽的底物范围的光催化二氟烷基化和环化级联反应,其分离产率高达90%。该方法提供了在温和条件下可持续有效地合成具有季碳中心的二氟烷基化吡咯并[1,2- a ]吲哚的方法。
Direct Annulations toward Phosphorylated Oxindoles: Silver-Catalyzed Carbon-Phosphorus Functionalization of Alkenes
作者:Ya-Min Li、Meng Sun、Hong-Li Wang、Qiu-Ping Tian、Shang-Dong Yang
DOI:10.1002/anie.201209475
日期:2013.4.2
Silver screen: The AgNO3‐catalyzed carbon phosphorylation of alkenes occurs by an alkene addition/cyclization cascade. Ag+ reacts with Ph2P(O)H to form the crucial active intermediate 1, which promotes the reaction. This method requires a cheap, nontoxic silver salt as the catalyst and substrates for the transformation are simple and readily accessible.
Comparative reactivity of N′-(5-benzoyl/ethoxycarbonyl)thiazol-2-yl-N,N-dimethylformamidines with ketenes
作者:Parvesh Singh、Alka Marwaha、Harmeet Singh、Mohinder P. Mahajan
DOI:10.1016/j.tet.2005.09.008
日期:2005.12
N,N-dimethylformamidines (1a and 1b), tremendously influenced by the electronic nature of the substituents on C-5 of the thiazolic ring with various monosubstituted and conjugated ketenes is reported herein. The DA cycloadditions of the dienyl pyrimidinone 3h with both symmetrical as well as unsymmetrical dienophiles leading to the formation of various thiazolic pyrimidinone derivatives are also reported
N '-[(5-苯甲酰基和乙氧基羰基)噻唑-2-基] -N,N-二甲基甲am(1a和1b)的反应性的比较说明,在很大程度上受取代基在C-5上C-5的电子性质的影响本文报道了具有各种单取代的和共轭的烯酮的噻唑环。还报道了二烯基嘧啶酮3h与对称和非对称亲二烯体的DA环加成导致形成各种噻唑基嘧啶酮衍生物。
Aryl radical cyclisations: Quinoline, isoquinolone, and 1-benzazepin-2-onerings via 6- and 7-exo cyclisations
作者:Andrew J. Clark、Keith Jones、Clive McCarthy、John M.D. Storey
DOI:10.1016/0040-4039(91)85099-q
日期:1991.6
The cyclisation of aryl radicals derived by treatment of aryl halides (1a), (1b), (4), (7a), (7b), and (10)with tri-n-butyltinhydride has been investigated.