3418-21-1Relevant articles and documents
Novel Dioxolane Ring Compounds for the Management of Phytopathogen Diseases as Ergosterol Biosynthesis Inhibitors: Synthesis, Biological Activities, and Molecular Docking
Min, Li-Jing,Wang, Han,Bajsa-Hirschel, Joanna,Yu, Chen-Sheng,Wang, Bin,Yao, Meng-Meng,Han, Liang,Cantrell, Charles L.,Duke, Stephen O.,Sun, Na-Bo,Liu, Xing-Hai
, p. 4303 - 4315 (2022/04/15)
Thirty novel dioxolane ring compounds were designed and synthesized. Their chemical structures were confirmed by 1H NMR, HRMS, and single crystal X-ray diffraction analysis. Bioassays indicated that these dioxolane ring derivatives exhibited ex
Propiconazole-like compound, and preparation method and application thereof
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Paragraph 0023-0025, (2021/08/11)
The invention discloses a propiconazole-like compound, and a preparation method and application thereof. The structural formula of the propiconazole-like compound is represented by formula (I)shown in the specification. In the formula (I), X is H, bromine
Application of poly(vinylphenyltrimethylammonium tribromide) resin as an efficient polymeric brominating agent in the α-bromination and α-bromoacetalization of acetophenones
Han, Bingbing,Zheng, Zubiao,Zheng, Dongcheng,Zhang, Lei,Cui, Peng,Shi, Jianjun,Li, Changjiang
supporting information, p. 2512 - 2520 (2019/07/04)
The applications of a new supported tribromide reagent based on poly(vinylbenzyltrimethylammonium hydroxide) resin (Amberlite 717) were reported. This supported tribromide resin was used directly in α-bromination and α-bromoacetalization of acetophenones without any other catalyst under mild conditions. The effects of solvents and the amount of the supported tribromide resin on the reactions were investigated. Under the optimal conditions, most of α-bromo and α-bromoacetal of acetophenones were selectively obtained in excellent yields.
One-pot synthesis of α-bromoacetals of ketones from secondary alcohols and 1,3-dibromo-5,5-dimethylhydantoin (DBDMH) in ethylene glycol
Han, Bingbing,Zheng, Zubiao,Wu, Fang,Wang, Aidong
supporting information, p. 2387 - 2394 (2017/11/15)
α-Bromoacetals of ketones were prepared from various secondary alcohols with 1,3-dibromo-5,5-dimethylhydantoin (DBDMH) and ethylene glycol through oxidation, bromination, and acetalization in one pot without the use of other catalysts under mild conditions. The effects of DBDMH, the solvent, and N-bromosuccinimide on the reaction were investigated. Under the optimal conditions, most α-bromoacetals of ketones were obtain in 90–98% yields.
One-step for the preparation of α-haloacetal of ketones with N-bromosuccinimide/N-chlorosuccinimide (NBS/NCS) and ethylene glycol
Zheng, Zubiao,Han, Bingbing,Wu, Fang,Shi, Tengfei,Liu, Jie,Zhang, Yong,Hao, Jialong
, p. 7738 - 7743 (2016/11/17)
A new process that could directly prepare α-haloacetal of ketones from various ketones with N-halosuccinimide (NBS/NCS) and ethylene glycol in one step without any other catalysts was reported. The effects of solvents, NBS/NCS and reaction temperature were investigated. Under the optimal condition, most of α-haloacetals of ketones were obtained in 90–100% yield.
Cyclopentyl methyl ether-NH4X: A novel solvent/catalyst system for low impact acetalization reactions
Azzena, Ugo,Carraro, Massimo,Mamuye, Ashenafi Damtew,Murgia, Irene,Pisano, Luisa,Zedde, Giuseppe
supporting information, p. 3281 - 3284 (2015/06/25)
Cyclopentyl methyl ether, a low impact ether forming a positive azeotrope with water, was successfully employed as a solvent in the synthesis of 1,3-dioxanes and 1,3-dioxolanes carried out under Dean-Stark conditions by the acetalization of aliphatic and aromatic aldehydes or ketones, employing ammonium salts as environmentally friendly acidic catalysts.
Synthesis, characterization, and structures of α-substituted selenenyl-acetophenones
Hodage, Ananda S.,Phadnis, Prasad P.,Wadawale, Amey,Priyadarsini,Jain, Vimal K.
supporting information, p. 700 - 710 (2014/06/09)
A series of α-substituted selenenyl acetophenone derivatives of the types, [PhC(OCH2CH2O)CH2Se]2, [PhC(OCH2CH2O)CH2SeR], (PhCOCH2Se) 2, and [PhCOCH2/s
An eco-friendly and efficient synthesis of benzoylformic acid and methyl benzoylformate from styrene
Dai, Zhihong,Peng, Xinhua,Dong, Xiongzi,Shi, Chunjie,Rong, Yuan
, p. 4979 - 4985 (2012/10/07)
The HBr/H2O2 system was found to be highly efficient and green catalytic system for the selective oxidation of styrene to benzoylformic acid in excellent yields under water as solvent. The process of etherification is simple, highly efficient and inexpensive by using TiO 2/ SO42- as catalyst.
Optimization of Grignard ring-opening of α-brominated dioxolanes for the preparation of β-hydroxy-protected vinyl ethers by a three-step one-pot procedure
André, Mathieu,Letribot, Boris,Bayle, Martine,Mounetou, Emmanuelle,Chezal, Jean-Michel
, p. 6107 - 6110 (2012/11/07)
Aliphatic, cyclic, and aromatic benzoate-protected γ-hydroxy enol ethers were prepared from α-brominated dioxolanes by a three-step reaction procedure and a one-pot protocol involving Grignard reagent formation, ring-opening, and final benzoate protection
Enantioselective synthesis of quinolizidines and indolizidines via a catalytic asymmetric hydrogenation cascade
Rueping, Magnus,Hubener, Lukas
supporting information; experimental part, p. 1243 - 1246 (2011/07/31)
A catalytic enantioselective synthesis of a new class of quinolizidines and indolizidines is presented. An asymmetric Bronsted acid catalyzed hydrogenation cascade as well as a sequential Bronsted acid/metal catalyzed hydrogenation protocol of 2-substituted quinolines yields benzofused quinolizidines and indolizidines in good yields with high diastereo- and enantioselectivities. Georg Thieme Verlag Stuttgart - New York.