55337-55-8Relevant articles and documents
Visible-light-promoted oxidative coupling of styrene with cyclic ethers
Kibriya, Golam,Ghosh, Debashis,Hajra, Alakananda
, p. 42 - 46 (2019/11/11)
A new visible-light-promoted oxidative coupling of vinylarenes with cyclic ethers has been developed using rose bengal as photocatalyst and tert-butyl hydrogenperoxide (TBHP) as oxidant under ambient air at room temperature. A library of α-oxyalkylated ketones with broad functionalities has been synthesized in moderate to good yields. A radical mechanism is suggested for the present protocol.
Sc(OTf)3-Catalyzed Addition of Bromomagnesium 2-Vinyloxy Ethoxide to Various Aldehydes Leading to Protected Aldol Products
Quinio, Pauline,Kohout, Laura,Roman, Daniela Sustac,Gaar, Jakob,Karaghiosoff, Konstantin,Knochel, Paul
supporting information, p. 1715 - 1719 (2016/07/06)
The addition of bromomagnesium 2-vinyloxy ethoxide to various aldehydes in the presence of 10 mol% Sc(OTf)3 provides a broad range of functionalized protected aldol compounds. The enantioselective preparation of these aldols can be achieved via a Swern oxidation-CBS reduction sequence. Use of the dioxolane derived from 2-bromocyclohexanone provides the expected aldol product as the anti diastereoisomer (dr >99:1).
Regioselective oxyalkylation of vinylarenes catalyzed by diatomite-supported manganese oxide nanoparticles
Sun, Huayin,Zhang, Yonghui,Guo, Fengfeng,Zha, Zhenggen,Wang, Zhiyong
experimental part, p. 3563 - 3569 (2012/05/20)
A regioselective oxyalkylation reaction of vinylarenes with cyclic ethers was developed under the catalysis of a new heterogeneous catalyst, the diatomite-supported Mn3O4 nanoparticles (SMONP-1). The use of this heterogeneous catalyst provided a novel approach for the synthesis of α-carbonyled β-alkylated aryl derivatives via a sp3 C-H bond functionalization under mild aerobic conditions.
CuBr-mediated oxyalkylation of vinylarenes under aerobic conditions via cleavage of sp3 C-H bonds α to oxygen
Cheng, Kai,Huang, Lehao,Zhang, Yuhong
supporting information; experimental part, p. 2908 - 2911 (2009/12/06)
A novel difunctionalization reaction of vinylarenes with cyclic ethers has been developed by copper catalysis via direct activation of α-sp 3 C-H bonds of oxygen In the presence of 1 -1.2 equiv of TBHP under mild aerobic conditions. The reactio
First reference to the alkoxymetallation of diisobutylaluminium and bromomagnesium-2-vinyloxy ethoxide to the corresponding (1,3-dioxolan-2- yl)methyl organometallics
Maier, Peter,Redlich, Hartmut
, p. 257 - 259 (2007/10/03)
Diisobutylaluminium and bromomagnesium-2-vinyloxy-ethoxide add at carbonyl compounds in the manner of (1,3-dioxolan-2-yl)methyl organometallics, giving the carbon-carbon addition products. It is assumed that the aluminium and magnesium compounds of 2-viny
REACTION OF 1-PHENYLVINYL TRIMETHYLSILYL ETHER WITH 2-ALKOXY-1,3-DIOXACYCLOALKANES
Amerkhanov, R. R.,Musavirov, R. S.,Rakhmankulov, D. L.
, p. 610 - 613 (2007/10/02)
The reaction of 1-phenylvinyl trimethylsilyl ether with 2-alkoxy-1,3-dioxacycloalkanes takes place smoothly at moderate temperatures and with good yields.The reaction makes it possible to synthesize cyclic β-keto acetals under mild conditions.
One-Pot Preparation of Alcohols from Aromatic Olefins and Acrylic Acid Derivatives by Cobalt(II) Porphyrin-Catalyzed Reductive Oxygenation Followed by Reduction with Trimethyl Phosphite
Matsusita, Yoh-ichi,Sugamoto, Kazuhiro,Matsui, Takanao
, p. 925 - 928 (2007/10/02)
Various aromatic olefins and acrylic acid derivatives were converted to benzyl alkohols and α-hydroxyalkanoic acid derivatives in good yields by the reductive oxygenation with oxygen and triethylsilane in the presence of catalytic amount of cobalt(II) porphyrin followed by treating the reaction mixture with trimethyl phosphite.
Reaction of β-keto ethyleneacetals with hydroxylamine: A correction
Paradkar,Latham,Krishnaswami
, p. 1497 - 1500 (2007/10/02)
A reaction of 2-(2-nitrobenzoylmethyl)-1,3-dioxolane (3) with hydroxylamine, followed by acid catalyzed cyclization, produced 5-(2- nitrophenyl)isoxazole (5) as the only isolable product, whereas 2- (benzoylmethyl)-1,3-dioxolane (9) under identical condit
Cobalt(II) Porphyrin-Catalyzed Oxidation of Olefins to Ketones with Molecular Oxygen and Triethylsilane in 2-Propanol
Matsushita, Yoh-ichi,Matsui, Takanao,Sugamoto, Kazuhiro
, p. 1381 - 1384 (2007/10/02)
An efficient conversion of olefins to ketones was achieved by the use of molecular oxygen and triethylsilane in the presence of a catalytic amount of cobalt(II) complex of porphyrin.The oxidation was accelerated remarkably in alcohols and had chomoselectivity for conjugated olefins.
Acylketene acetals in organic synthesis
Eid Jr.,Konopelski
, p. 975 - 992 (2007/10/02)
The preparation and reactivity of achiral and enantiomerically pure acylketene acetals are described. The key reactions of these substrates involve facile conjugate hydroboration and organolithium addition. Enantiomerically pure acylketene acetals were employed to generate a homochiral β-keto ketal through a highly diastereoselective lithium enolate quench. This β-ketal, which was also prepared through a desymmetrization ketalization reaction on a meso dione, was employed in the synthesis of the insect pheromone sitophilure.