hydrides MHx and NH3 and on the decomposition behaviors of the metal amides are very important and indispensable. In this work, we investigated the novel reaction between MHx and NH3 at room temperature by mechanical ball milling. As a result of ball milling, their metal amides could be effectively produced in high purity. Then, we examined the thermal

Although typical metal amides are recognized as strong stoichiometric bases for deprotonation of inert or less acidic hydrogen atoms, transition‐metal amides, namely silver and copper amides, show interesting abilities as one of the simplest acid/base catalysts in stereoselective carbon–carbon bond‐forming reactions.

As a result of ball milling, their metal amides could be effectively produced in high purity. Then, we examined the thermal The reactivities of different 3-imino-functionalized indoles with rare-earth-metal amides [(Me3Si)2N]3RE(μ-Cl)Li(THF)3 were studied to reveal unexpected substituent effects on C–H bond activation pathways, leading to the formation of unusual rare-earth-metal complexes. The reactions of 3-(tert-butylimino)indole with [(Me3Si)2N]3RE(μ-Cl)Li(THF)3 produced tetranuclear rare-earth-metal complexes {[η1:(μ2-η1:η1):η1-3-(tBuN═CH)C8H4N]RE2(μ2-Cl)2(THF)[N(SiMe3)2](η1:η1-[μ-η5:η2-3 The combined catalysts exhibited much better activity than their components KH or alkaline-earth metal amides, suggesting an obvious bimetallic synergistic effect. Preliminary mechanism studies revealed a degradation and activation effect of the alkaline-earth metal amides on saline KH. ALKALI METAL AMIDES are basic. React with any substance having active hydrogen atoms to liberate gaseous ammonia. This includes alcohols and acids, and most importantly, water.

Metal amides reactions

Gooßen, Lukas J. (författare): SpringerLink (Online service). ISBN 9783642342868 Water-react 2; Skin Corr. 1B; Eye Dam. 1; H261,. H314, H318. <= 100 % ADR-. RID: ALKALIMETALLAMIDER.

In this work, the ammonia equilibrium concentrations of LiNH 2 , KNH 2 and Ba(NH 2 ) 2 at ca.10 bar of hydrogen pressure and different temperatures were measured by using a high-pressure gas-solid reaction system equipped with a Remarkable Reaction of Hetero-S-Block-Metal Amides with Molecular Oxygen: Cationic (NMNMg) 2 Ring Products (M=Li or Na) with Anionic Oxo or Peroxo Cores A transition metal-free NaOH mediated hydration of organo nitriles to amides under mild reaction conditions has been described. Both aliphatic and aromatic/hetero nitriles were smoothly converted into corresponding amides in moderate to good yields.

J. E. Bäckvall, “Metal-Mediated Additions to Conjugated Dienes” in “Advances in Functionalization via Epoxide Reactions” J. Org. Chem. 1988, 53 Allylamines via Palladium-Catalyzed Amide Addition to Allylic Substrates” Tetrahedron Lett.

Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ, 07102 USA. Search for more papers by this author. Prof.

Metal-Free Transamidation of Secondary Amides by N–C Cleavage Transamidation reactions represent a fundamental chemical process involving conversion of one amide functional group into another. Herein, we report a facile, highly chemoselective method for transamidation of N-tert-butoxycarbonylation (N-Boc) activated secondary amides that proceeds under exceedingly mild conditions in the

Table 1. Thermodynamic functions of reactions and compounds. The units are defined as per mole amount of NH3 and each compounds for the reactions and compounds, respectively. - "Thermodynamic properties of metal amides determined by ammonia pressure-composition isotherms" Metal-Dependent Reactions of Bulky Metal(II) Amides M[N(SiMe3)2]2 with 3,3′-Disubstituted Binaphthols (HO)2C20H10(SiR3)2-3,3′: Selective Conversion of One Equivalent −OH Group to a Silyl Ether −OSiMe3 2011-07-15 2018-10-09 In this article are summarized general properties, synthesis, reactivity, and catalysis of Group 4 transition metal amide complexes. Thermally robust but moisture sensitive compounds of the type M (NR 2) 4 and MY n (NR 2) 4-n [M=Ti, Zr, Hf; R=H, alkyl, aryl; Y=X(halogens), OR; n=1-3) are generally synthesized from MX 4 and amines or alkali metal amides, by disproportionation reactions of M(NR The effect of other alkaline metal amides was examined (Table S4). When LiHMDS or NaHMDS was used, the reaction procceded sluggishly with very poor enantioselectivities (entries 2 and 3). On the other hand, the catalyst prepared from CsHMDS showed high reactivity; however, very poor enantioselectivity was obtained (entry 4).

71% of these acylation reactions were amide bond forming reactions, although no differentiation is made as to whether the bond appears within the final compound or is used in forming an intermediate such as a protecting group. Other such reviews showed similar statistics for the prevalence of amides and amide bond forming reactions. ABSTRACT: A general method for the synthesis of amides involving the direct coupling of alkali metal carboxylate salts with amines is described. Amidation of a wide variety of carboxylate salts with either free amines or their ammonium hydrochloride salts can be achieved using HBTU as a coupling agent in combination with Hünig ’s base. 2013-07-15 · Although typical metal amides are recognized as strong stoichiometric bases for deprotonation of inert or less acidic hydrogen atoms, transition-metal amides, namely silver and copper amides, show interesting abilities as one of the simplest acid/base catalysts in stereoselective carbon-carbon bond-forming reactions. Vinyl cations derived from diazo ketones participate in transition-metal-free C–H insertion reactions, but the corresponding amide and ester analog exhibit divergent reactivity profiles.
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Ambient Moisture Accelerates Hydroamination Reactions of Vinylarenes with Alkali‐Metal Amides under Air. Dr. Florian F. Mulks. Departement für Chemie und Biochemie (DCB), Universität Bern, Freiestrasse 3, 3012 Bern, Switzerland. These authors contributed equally to this work.

Köp Enolization Reactions Mediated by S-Block Metal Amide Reagents av Xuyang He på Bokus.com.
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SwePub titelinformation: Metal-Free N-Arylation of Secondary Amides at Room Temperature.

2.2 Nickel Catalysis. 3 Kumada–Corriu Cross-Coupling. 3.1 Nickel α-halo amides and aryl organometallics appeared as an at-tractive strategy.