24793-83-7Relevant academic research and scientific papers
Heterocyclization involving benzylic C(sp3)-H functionalization enabled by visible light photoredox catalysis
Pandey, Ganesh,Laha, Ramkrishna,Mondal, Pradip Kumar
supporting information, p. 9689 - 9692 (2019/08/15)
A general and efficient method for heterocyclization involving benzylic C(sp3)-H functionalization enabled by visible light photoredox catalysis to access a wide range of structurally diverse oxygen as well as nitrogen heterocycles up to a gram scale is reported. The potential application of this new methodology is demonstrated by the total synthesis of (-)-codonopsinine and (+)-centrolobine. Herein it is proposed that selectfluor, unlike a fluorinating reagent, acts as an oxidative quencher and a hydrogen radical acceptor.
Optical enrichment in enzyme-catalyzed resolution of 1-aryl-2,2-dimethyl-1,3-propanediols
Mukherjee, Chandrani,Mohapatra, Prabhu P.,Youssef, Dani,Jha, Amitabh
, p. 1 - 6 (2017/01/10)
Novozym 435 efficiently catalyzed the chemo-, regio-, and enantioselective transesterification of 1-aryl-2,2-dimethyl-1,3-propanediols in different organic solvents with vinyl acetate as the acetyl donor at room temperature. This enzyme-catalyzed chemical
Synthesis and biological activity of cis 2-(6-chloropyridine-3-yl) methylamino-4-substitutedphenyl-5,5-dimethyl-1,3,2-dioxaphosphinane 2-oxides
De, Qing Shi,Liu, Yi,Feras,Xiao, Song Tan,Jian, Xin Chen
, p. 1937 - 1946 (2007/10/03)
A series of novel, asymmetric-cyclic phosphoramides containing substituted pyridine were synthesized via the condensation reactions of trans 2-chloro-4-substitutedphenyl-5, 5-dimethyl-1,3,2-dioxaphosphinane 2-oxide with 2-chloro-5-aminomethylpyridine or 3
Synthesis and fugicidal activities of 2-silatranyl propylamino-4-substitued phenyl(hydrogen)-5,5-dimethyl-1,3,2-dioxaphosphinanes-2-oxides (sulfides)
Wan, Shi-Guan,Yang, Xing-Yu,Yu, Yan,Liu, Chang
, p. 2813 - 2821 (2007/10/03)
Phosphoryl-aminopropyl-silatranes 4 were synthesized by nucleophilic reactions of 2-Cl-1,3,2- dioxaphosphinanes 2 with α-aminopropyl-silatrane 3, which was obtained by the cyclization reaction of triethanolamine and γ-aminopropyltriethoxysilane. The structures of the products were characterized by 1H NMR, 31P NMR, IR, MS, and elemental analyses. The target compounds 4 exhibited fungicidal activity. Copyright Taylor & Francis Inc.
Fluoride-induced chemiluminescent decomposition of dioxetanes bearing a siloxyaryl moiety to produce an alkyl aryl ketone as an emitter
Watanabe, Nobuko,Nagashima, Yasuhiro,Yamazaki, Takahiro,Matsumoto, Masakatsu
, p. 4811 - 4819 (2007/10/03)
Tetrabutylammonium fluoride induces the decomposition of 1-tert-butyl-4,4-dimethyl-5-(3-siloxyphenyl)-2,6,7-trioxabicyclo[3.2.0] heptane (4a) in DMSO to form an oxyanion of aromatic ketone (14a) as an emitter with high singlet-chemiexcitation yield comparable with that for a chemically initiated electron exchange luminescence (CIEEL) active dioxetane producing an oxyanion of aromatic ester as an emitter. A 7-siloxynaphthalen-2-yl analog (4b) was found on similar treatment to emit light with the maximum wavelength the longest among CIEEL-active dioxetanes hitherto known.
The Design of Resolving Agents. Chiral Cyclic Phosphoric Acids
Hoeve, Wolter ten,Wynberg, Hans
, p. 4508 - 4514 (2007/10/02)
A systematic investigation has been started with the twofold purpose of synthesizing efficient resolving agents and of gaining an insight into the factors that contribute to successful resolutions.We report on the synthesis, resolution, and application of a number of chiral cyclic phosphoric acids.Among these acids, 4-(2-chlorophenyl)-5,5-dimethyl-2-hydroxy-1,3,2-dioxaphosphorinane 2-oxide (7A) is an efficient resolving agent, being useful for the resolution of amines and amino acids.Acid chloride 20 is a useful reagent for the determination of the ee of chiral amines.The absolute configuration of (-)-7A was determined through an X-ray structure determination of its salt with (-)-(p-hydroxyphenyl)glycine.
