Synthesis of 2-phenylnaphthalenes from styryl-2-methoxybenzenes
作者:Ramesh Mudududdla、Rohit Sharma、Sheenu Abbat、Prasad V. Bharatam、Ram A. Vishwakarma、Sandip B. Bharate
DOI:10.1039/c4cc05151c
日期:——
A new simple and efficient method for the synthesis of 2-phenylnaphthalenes from electron-rich 1-styryl-2-methoxybenzenes has been described. The reaction proceeds via TFA catalyzed C-C bond cleavage followed by intermolecular [4+2]-Diels-Alder cycloaddition of an in situ formed styrenyl trifluoroacetate intermediate. The quantum chemical calculations identified the transition state for the cycloaddition
Aryllithiums were arylated with S-arylphenothiazinium ions through selective ligand coupling of intermediary sulfuranes. Various unsymmetrical biaryls were obtained without transition-metal catalysis.
Es werden Diamidine synthetisiert, welche sich vom Typ A des 6- oder 5-Amidino-2-[4-amidino-phenyl]-thionaphthens oder -benzofurans dadurch ableiten, daß der annelierte Fünfring weiter variiert wird, daß ein- und zweigliedrige Brücken zwischen die beiden Ringsysteme eingeschoben werden, und daß die flankierenden Amidino-Gruppen abgewandelt werden. – Nur bei 5-Amidino-2-[4-amidino-phenyl]-indazol (4c)
Es werden Dimidine synthetistisiert,welche sich vom Typ A des 6-oder 5-Amidino-2- [4-amidino-phenyl] -thionaphthens oder -benzofurans dadurchableiten,daßder annelierteFünfringweiter variiert wird,daßein-e- und-rigund贝尔登(Ringsysteme)音响系统公司和弗拉基耶伦登(Fankierenden)大街上的阿米迪诺-格鲁彭(Amidino-Gruppen)abgewandelt werden。– Nur bei 5-Amidino-2- [4-amidino-phenyl] -indazol(4c)和-benztriazol(10d)漂白剂Hervorragenden trypanociden
Synthesis of 2-phenylnaphthalenes from styrene oxides using a recyclable Brønsted acidic [HNMP]<sup>+</sup>HSO<sub>4</sub><sup>−</sup> ionic liquid
作者:Kishor V. Wagh、Bhalchandra M. Bhanage
DOI:10.1039/c5gc01170a
日期:——
This work reports novel and efficient protocol for the synthesis of 2-phenylnaphthalenes from styrene oxides using recylable ionic liquid. The ionic liquid N-methyl-2-pyrrolidone hydrogensulfate [HNMP]+HSO4- played a dual role of...
We report a straightforward, metal-free, efficient protocol for the synthesis of 2-phenylnaphthalenes from 1-phenylethane-1,2-diols under mild conditions. In this strategy, 1,1,1,3,3,3-hexafluoro-2-propanol is used as a solvent that stabilizes the reaction intermediate. An in situ IR experiment revealed that the reaction proceeds through the formation of phenylacetaldehyde followed by a [4+2] Diels–Alder
我们报告了一种在温和条件下从 1-苯基乙烷-1,2-二醇合成 2-苯基萘的简单、无金属、有效的方案。在该策略中,1,1,1,3,3,3-六氟-2-丙醇用作稳定反应中间体的溶剂。原位 IR 实验表明,该反应通过苯乙醛的形成以及 [4+2] Diels-Alder 反应进行。进行了几个对照实验以获得对反应的机理见解。