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grignard reagents

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Keyword:'grignard reagents'
Showing 1-30 of 170 results for "grignard reagents" within Papers
The Grignard Reagents.
Seyferth D
Organometallics, 28 (6), 1598-1605 (2009)
The quest for chiral Grignard reagents.
Hoffmann RW
Chemical Society Reviews, 32(4), 225-230 (2003)
The Grignard Reagents.
Seyferth D
Organometallics, 28(6), 1598-1605 (2009)
Jonathan T Reeves et al.
Organic letters, 12(19), 4388-4391 (2010-09-04)
Aryltrimethylammonium triflates and tetrafluoroborates were found to be highly reactive electrophiles in the Pd-catalyzed cross coupling with aryl Grignard reagents. The coupling reactions proceed at ambient temperature with a nearly stoichiometric quantity of Grignard reagent, and diverse functionality is tolerated.
Chao-Shan Da et al.
Organic letters, 11(24), 5578-5581 (2009-11-17)
Generally used and highly reactive RMgBr reagents were effectively deactivated by bis[2-(N,N-dimethylamino)ethyl] ether and then were employed in the highly enantioselective addition of Grignard reagents to aldehydes. The reaction was catalyzed by the complex of commercially available (S)-BINOL and Ti(O(i-)Pr)(4)
Munawar Hussain et al.
Organic letters, 15(1), 54-57 (2012-12-22)
The synthesis of optically active piperidines by enantioselective addition of aryl Grignard reagents to pyridine N-oxides and lithium binolate followed by reduction is reported for the first time. The reaction results in high yields (51-94%) in combination with good ee
Bryden A F Le Bailly et al.
Chemical communications (Cambridge, England), 48(10), 1580-1582 (2011-11-02)
An iron-catalysed, hydride-mediated reductive cross-coupling reaction has been developed for the preparation of alkanes. Using a bench-stable iron(II) pre-catalyst, reductive cross-coupling of vinyl iodides, bromides and chlorides with aryl- and alkyl Grignard reagents successfully gave the products of formal sp(3)-sp(3)
A new synthesis of perfluoroaromatic Grignard reagents.
Respess W L, et al.
Journal of Organometallic Chemistry, 18(2), 263-274 (1969)
Fang Zhang et al.
Organic letters, 13(22), 6102-6105 (2011-10-29)
Facile arylation and alkylation of nitropyridine N-oxides were developed through the reactions of Grignard reagents with nitropyridine N-oxides. For the same 4-nitropyridine N-oxide, arylation occurred at the 2- (or 6-) position, whereas alkylation occurred at the 3-position in an adjustably
Cascade reactions using LiAlH4 and grignard reagents in the presence of water.
M Brett Runge et al.
Angewandte Chemie (International ed. in English), 47(5), 935-939 (2007-12-18)
Mechanical activation of magnesium turnings for the preparation of reactive Grignard reagents
Baker KV, et al.
The Journal of Organic Chemistry, 56(2), 698-703 (1991)
Grignard reagent formation.
Garst JF and Soriaga MP
Coordination Chemistry Reviews, 248(7-8), 623-652 (2004)
Oleg Vechorkin et al.
Angewandte Chemie (International ed. in English), 48(16), 2937-2940 (2009-01-29)
Reacting in the 'Ni'ck of time: The title reaction is realized by using an isolated Ni(II) complex (1). The catalysis tolerates a wide range of important functional groups that are often incompatible with Grignard reagents in cross-coupling reactions.
Akshai Kumar et al.
Chemistry, an Asian journal, 5(8), 1830-1837 (2010-06-22)
The reactivity of Grignard reagents towards imines in the presence of catalytic and stoichiometric amounts of titanium alkoxides is reported. Alkylation, reduction, and coupling of imines take place. Whereas reductive coupling is the major reaction in stoichiometric reactions, alkylation is
Lu Wang et al.
Organic letters, 14(15), 3978-3981 (2012-07-27)
3-Acylindoles undergo nucleophilic-type reactions with Grignard reagents to efficiently afford either cis- or trans-substituted indolines, depending on the different quenching procedures. The enolate intermediate could be trapped by aryl acyl chlorides to provide indolines bearing a quaternary carbon center with
The mono-alkyldecyanation of tetrafluoroterephthalonitrile by reaction with Grignard reagents.
Milner DJ.
Journal of Organometallic Chemistry, 302(2), 147-152 (1986)
Jun-Hao Cheng et al.
The Journal of organic chemistry, 77(22), 10369-10374 (2012-10-17)
A convenient one-pot approach for the synthesis of aryl sulfides through the coupling of thiols with Grignard reagents in the presence of N-chlorosuccinimide is described. The sulfenylchlorides were formed when thiols were treated with N-chlorosuccinimide, and the resulting sulfenylchlorides were
Iron-catalyzed cross-coupling of alkyl halides with alkenyl grignard reagents.
Amandine Guérinot et al.
Angewandte Chemie (International ed. in English), 46(34), 6521-6524 (2007-07-28)
Copper nanoparticle-catalyzed cross-coupling of alkyl halides with Grignard reagents.
Kim JH and Chung YK.
Chemical Communications (Cambridge, England), 49(94), 11101-11103 (2013)
Diisopropylamide and TMP turbo-Grignard reagents: a structural rationale for their contrasting reactivities.
David R Armstrong et al.
Angewandte Chemie (International ed. in English), 49(18), 3185-3188 (2010-03-31)
Nickel-Catalyzed Cross-Coupling of Aryl Chlorides with Aryl Grignard Reagents.
B ohm VPW, et al.
Angewandte Chemie (International Edition in English), 39(9), 1602-1604 (2000)
H Park et al.
Molecular diversity, 5(2), 57-60 (2002-02-28)
Polymer-bound substituted bromophenols were found to readily undergo a Ni(0)-catalyzed cross-coupling reaction with Grignard reagents to give a variety of substituted phenols and hydroquinones, after cleavage from the support, in moderate to high yields. The requisite bromophenol derivatives, which were
G R M Dowson et al.
Faraday discussions, 183, 47-65 (2015-09-16)
Carbon Dioxide Utilisation (CDU) processes face significant challenges, especially in the energetic cost of carbon capture from flue gas and the uphill energy gradient for CO2 reduction. Both of these stumbling blocks can be addressed by using alkaline earth metal
Fang Zhang et al.
Organic letters, 14(21), 5618-5620 (2012-10-20)
The unprecedented substitution of a nitro group with aryl or alkenyl groups of Grignard reagents affords 2-aryl or alkenylpyridine N-oxides in modest to high yields with high chemoselectivity. This protocol allows a simple and clean synthesis of various 2-substituted pyridine
Mark F. Mechelke et al.
The Journal of organic chemistry, 64(13), 4821-4829 (2001-10-25)
The synthesis of a family of farnesol analogues, incorporating aromatic rings, has been achieved in high yields through the development of a regioselective coupling of allylic tetrahydropyranyl ethers with organometallic reagents. The allylic THP group is displaced readily by Grignard
The reaction of grignard reagents with 4-hydroxy-and 4-ethoxycoumarin.
Wawzonek S, et al.
Journal of the American Chemical Society, 76(4), 1080-1082 (1954)
Oxidative Coupling Reactions of Grignard Reagents with Nitrous Oxide.
Kiefer G, et al.
Angewandte Chemie (International Edition in English), 52(24), 6302-6305 (2013)
Palladium?Catalyzed Coupling of Alkyl Chlorides and Grignard Reagents.
Frisch A C, et al.
Angewandte Chemie (International Edition in English), 41(21), 4056-4059 (2002)
Enantioselective Copper-Catalyzed SN2? Substitution with Grignard Reagents.
Alexakis A, et al.
Synlett, 0927-0930 (2001)
Philip J Rushworth et al.
The Journal of organic chemistry, 78(18), 9517-9521 (2013-08-30)
Tetramethylethylenediamine (TMEDA) acts as cheap and readily removed ligand in the iron-catalyzed coupling of alkyl Grignard reagents and activated aryl chlorides. The use of TMEDA allows for low ligand and iron catalyst loading as well as an increased reaction concentration
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