23193-18-2Relevant academic research and scientific papers
Photo-Organocatalysis of Atom-Transfer Radical Additions to Alkenes
Arceo, Elena,Montroni, Elisa,Melchiorre, Paolo
, p. 12064 - 12068 (2014)
We have found that an organic molecule as simple as p-anisaldehyde efficiently catalyzes the intermolecular atom-transfer radical addition (ATRA) of a variety of haloalkanes onto olefins, one of the fundamental carbon-carbon bond-forming transformations i
SYNTHESIS OF ESTERS OF 2-SUBSTITUTED 4-KETOPENTANOIC ACIDS BY THE ALKYLATION OF CH-ACIDS USING CHLOROACETONE UNDER PHASE TRANSFER CATALYSIS CONDITIONS
Sizov, A. Yu.,Yanovskaya, L. A.,Dombrovskii, V. A.
, p. 410 - 411 (1990)
An improved method was developed for the synthesis of ethyl esters of 2-substituted 4-ketopentanoic acids by the alkylation of CH2(X)CO2Et using chloroacetone in the liquid-solid KOH (K2CO3 or Na2CO3)-DMF-PhCH2(Et)3NCl system.
Gold N-Heterocyclic Carbene Catalysts for the Hydrofluorination of Alkynes Using Hydrofluoric Acid: Reaction Scope, Mechanistic Studies and the Tracking of Elusive Intermediates
Bédard, Sandrine,Cavallo, Luigi,Falivene, Laura,Gauthier, Rapha?l,Nolan, Steven P.,Paquin, Jean-Fran?ois,Saab, Marina,Tzouras, Nikolaos V.,Van Hecke, Kristof,Zhang, Ziyun
supporting information, (2021/12/09)
An efficient and chemoselective methodology deploying gold-N-heterocyclic carbene (NHC) complexes as catalysts in the hydrofluorination of terminal alkynes using aqueous HF has been developed. Mechanistic studies shed light on an in situ generated catalyst, formed by the reaction of Br?nsted basic gold pre-catalysts with HF in water, which exhibits the highest reactivity and chemoselectivity. The catalytic system has a wide alkyl substituted-substrate scope, and stoichiometric as well as catalytic reactions with tailor-designed gold pre-catalysts enable the identification of various gold species involved along the catalytic cycle. Computational studies aid in understanding the chemoselectivity observed through examination of key mechanistic steps for phosphine- and NHC-coordinated gold species bearing the triflate counterion and the elusive key complex bearing a bifluoride counterion.
Copper-Catalyzed Cross-Nucleophile Coupling of β-Allenyl Silanes with Tertiary C-H Bonds: A Radical Approach to Branched 1,3-Dienes
Shan, Qi-Chao,Hu, Lu-Min,Qin, Wei,Hu, Xu-Hong
supporting information, p. 6041 - 6045 (2021/08/03)
Described herein is a distinctive approach to branched 1,3-dienes through oxidative coupling of two nucleophilic substrates, β-allenyl silanes, and hydrocarbons appending latent functionality by copper catalysis. Notably, C(sp3)-H dienylation proceeded in a regiospecific manner, even in the presence of competitive C-H bonds that are capable of occurring hydrogen atom transfer process, such as those located at benzylic and other tertiary sites, or adjacent to an oxygen atom. Control experiments support the intermediacy of functionalized alkyl radicals.
Cu(OAc)2-Triggered Cascade Reaction of Malonate-Tethered Acyl Oximes with Indoles, Indole-2-alcohols, and Indole-2-carboxamides
Mao, Peng-Fei,Zhou, Li-Jin,Zheng, An-Qi,Miao, Chun-Bao,Yang, Hai-Tao
supporting information, p. 3153 - 3157 (2019/05/10)
A Cu(OAc)2-promoted cascade reaction of malonate-tetherd acyl oximes with indoles, indole-2-alcohols, or indole-2-carboxmides provides facile access to polysubstituted 3-pyrrolin-2-ones. The reaction features the generation of two adjacent elec
METHOD OF CONTROLLING PLANTS
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Page/Page column 29, (2018/02/28)
The present invention provides a method of controlling plants comprising applying to the plants, or to the locus of the plants a composition comprising (A) a compound of formula (I) selected from the group consisting of: Formula(I), or an N-oxide or salt form thereof, and (B) one or more further herbicides.
HERBICIDAL PYRIDAZINONE COMPOUNDS
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Page/Page column 25, (2018/05/24)
The present invention relates to compounds of Formula (I), or an agronomically acceptable salt of said compounds wherein R1a, R1b, R2, X, A, Ra, Rb, Rc, Rd and m are as defined herein. The invention further relates to herbicidal compositions which comprise a compound of Formula (I), to their use for controlling weeds. The invention further relates to intermediate compounds used to produce compounds of Formula (I).
HERBICIDAL PYRIDAZINONE COMPOUNDS
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Page/Page column 57, (2017/11/10)
The present invention relates to compounds of Formula (I), or an agronomically acceptable salt of said compounds wherein A1, R1, Ra, Rb, Rc and Rd are as defined herein. The invention further relates to herbicidal compositions which comprise a compound of Formula (I), to intermediate compounds used to produce compounds of Formula (I), to processes for producing compounds of Formula (I) and to the use of compounds of Formula (I) for controlling weeds, in particular in crops of useful plants.
Tin-free radical alkylation of ketones via N-silyloxy enamines
Song, Hyun-Ji,Lim, Che Jo,Lee, Sunggi,Kim, Sunggak
, p. 2893 - 2895 (2008/09/18)
The radical alkylation of ketones is achieved by their conversion into corresponding N-silyloxy enamines, followed by a radical reaction with alkyl halides bearing electron-withdrawing groups. The Royal Society of Chemistry 2006.
Reactions of per-O-acetylglucosyl isothiocyanate with carbon bases. A new method for the stereocontrolled syntheses of nucleosides and glucosylaminothiophenes
Fuentes, Jose,Molina, Jose L.,Pradera, M. Angeles
, p. 2517 - 2532 (2007/10/03)
Reaction of 2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl isothiocyanate 5 with diethyl malonate in a basic medium gave the corresponding glucopyranosyl thioamide without significant deacetylation. This thioamide in solution presents Z-anti as the sole configuration. Reactions of 5 with carbanions which have an ethoxycarbonyl group are a way to prepare anomerically pure N- nucleoside derivatives of pyrrole and tetrahydropyridine. Reactions of 5 with carbanions stabilized by one cyano group are used to prepare glucosylamino thiophenes with only the β-configuration. Some other stereochemical aspects of the prepared compounds are discussed.
