1198-96-5Relevant articles and documents
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Hosokawa et al.
, p. 3662 (1976)
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Simple metal salts supported on montmorillonite as recyclable catalysts for intramolecular hydroalkoxylation of double bonds in conventional and VOC-exempt solvents
Notar Francesco, Irene,Cacciuttolo, Bastien,Pucheault, Mathieu,Antoniotti, Sylvain
, p. 837 - 841 (2015)
We describe herein an efficient and particularly sustainable catalytic system for the intramolecular hydroalkoxylation of double bonds. A heterogeneous catalyst based on the impregnation of benign metals such as iron and bismuth on montmorillonite was used for a highly atom-economic transformation in DMC, a non-VOC solvent. The transformation allowed the formation of a large range of cyclic ethers from the corresponding unsaturated alcohols and the catalyst could be recycled several times.
Annulation of phenols: Catalytic behavior of conventional and 2d zeolites
Opanasenko, Maksym V.,Shamzhy, Mariya V.,Jo, Changbum,Ryoo, Ryong,Cejka, Jiri
, p. 1919 - 1927 (2014)
Catalytic behavior of MFI zeolites differing in thickness of nanosheets and ordering was studied in annulation of phenols, and compared with 3D zeolites BEA and MFI containing large or medium pores as well as with micro/mesoporous zeolite USY. The highest
An improved method for synthesis of 1-benzopyrans from unsaturated alcohols and phenols using a catalytic amount of acids
Ishino,Mihara,Hayakawa,Miyata,Kaneko,Miyata
, p. 439 - 448 (2001)
1-Benzopyrans, such as chromans and chromenes, were prepared in good to excellent yields by using a catalytic amount of p-toluenesulfonic acid through intermolecular cyclization reaction of phenols with unsaturated alcohols in 1,2-dichlroroethane.
Facile synthesis of 2,2-Dimethylchromans by Mo(CO)6 Catalyzed reaction of aryl prenyl ethers
Bernard, Angela M.,Cocco, Maria T.,Onnis, Valentina,Piras, Pier P.
, p. 256 - 258 (1998)
2,2-Dimethylchromans 3a-g are synthesized in good yields by a one-pot reaction of the aryl prenyl ethers 1a-g with a catalytic amount of Mo(CO)6 in refluxing toluene.
Microwave-assisted aromatic C-O bond formation: A rapid and efficient method for the synthesis of aryl ethers
Xu, Boyan,Xue, Jijun,Zhu, Jianrong,Li, Ying
, p. 202 - 203 (2008)
A rapid and efficient aromatic C-O bond formation has been developed based on microwave-assistant, which is particularly useful for the intramolecular coupling of halides with alcohols. This method needs not the use of transition-metal catalyst. It was also demonstrated that the method can be used in the synthesis of bioactive natural flavans. Copyright
Axially Chiral 1,1'-Binaphthyl-2-Carboxylic Acid (BINA-Cox) as Ligands for Titanium-Catalyzed Asymmetric Hydroalkoxylation
Blazejak, Max,Helmbrecht, Sebastian L.,Hintermann, Lukas,Schlüter, Johannes
supporting information, (2020/04/15)
Axially chiral, enantiopure 1,1'-binaphthyl-2-carboxylic acids (BINA-Cox) have recently been introduced as chiral ligands for transition metal catalysis. Together with equimolar, co-catalytic amounts of Ti(OiPr)4 and water they form an in situ catalyst that performs the asymmetric catalytic hydroalkoxylation of 2-allylphenols to 2-methylcoumarans at high temperature (240 °C, microwave heating). The synthesis of reference ligand 2'-MeO-BINA-Cox (L1) has been optimized and performed at molar scale. Synthetic routes have been developed to access a variety of substituted BINA-Cox ligands (>30 examples), which have been tested for ligand effects on the reference asymmetric cyclization of 2-allylphenol. The substrate range of asymmetric catalytic hydroalkoxylation has been explored through systematic substrate structure variations to define scope and limitations of the titanium-catalyzed process. The new substrates 2-(1-vinylcycloalkyl)phenols (1j, 1k), 2-(2-vinylphenyl)propan-2-ol (1t), and 2'-vinyl-[1,1'-biphenyl]-2-ol (1u) are shown to undergo asymmetric catalytic cyclization to benzodihydrofurans and benzo[c]chromene, respectively.
Alkylation of Phenol And Hydroquinone by Prenol in the Presence of Organoaluminum Catalysts
Chukicheva, I. Yu.,Fedorova,Koroleva,Kuchin
, p. 1 - 6 (2018/02/19)
Prenylphenols and 2,2-dimethylbenzopyrans were synthesized via alkylation of phenol and hydroquinone with prenol in the presence of organoaluminum catalysts, i.e., aluminum phenoxide and isopropoxide. Reaction products were isolated and characterized. Sev