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Showing 25 to 36 of 1327 entries
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Copper-Catalyzed Cyanation of N-Tosylhydrazones with Thiocyanate Salt as the "CN" Source.

The Journal of organic chemistry

Huang Y, Yu Y, Zhu Z, Zhu C, Cen J, Li X, Wu W, Jiang H.
PMID: 28656758
J Org Chem. 2017 Jul 21;82(14):7621-7627. doi: 10.1021/acs.joc.7b00836. Epub 2017 Jul 10.

A novel protocol for the synthesis of α-aryl nitriles has been successfully achieved via a copper-catalyzed cyanation of N-tosylhydrazones employing thiocyanate as the source of cyanide. The features of this method include a convenient operation, readily available substrates, low-toxicity...

Catalytic Enantioselective Reaction of α-Phenylthioacetonitriles with Imines Using Chiral Bis(imidazoline)-Palladium Catalysts.

Chemistry (Weinheim an der Bergstrasse, Germany)

Kondo M, Kobayashi N, Hatanaka T, Funahashi Y, Nakamura S.
PMID: 25965425
Chemistry. 2015 Jun 15;21(25):9066-70. doi: 10.1002/chem.201501351. Epub 2015 May 12.

The catalytic enantioselective reaction of α-phenylthioacetonitriles with imines has been developed. The reaction of various imines proceeds in good yields and diastereo- and enantioselectivities in the presence of chiral bis(imidazoline)-palladium catalysts. The obtained products can be converted into β-aminonitrile...

N-Heterocyclic Carbene-Catalyzed Diastereoselective Vinylogous Michael Addition Reaction of γ-Substituted Deconjugated Butenolides.

The Journal of organic chemistry

Guo H, Xing F, Du GF, Huang KW, Dai B, He L.
PMID: 26569552
J Org Chem. 2015 Dec 18;80(24):12606-13. doi: 10.1021/acs.joc.5b01845. Epub 2015 Nov 30.

An efficient N-heterocyclic carbene (NHC)-catalyzed vinylogous Michael addition of deconjugated butenolides was developed. In the presence of 5 mol % of the NHC catalyst, both γ-alkyl- and aryl-substituted deconjugated butenolides undergo vinylogous Michael addition with various α, β-unsaturated ketones,...

Coupling of platinated triguanides with platinum-activated nitriles as a novel strategy for generation of dimetallic systems.

Dalton transactions (Cambridge, England : 2003)

Serebryanskaya TV, Novikov AS, Gushchin PV, Zolotarev AA, Gurzhiy VV, Kukushkin VY.
PMID: 25720690
Dalton Trans. 2015 Apr 07;44(13):6003-11. doi: 10.1039/c4dt03870c.

One of two Pt(IV)-activated propanenitriles in trans-[PtCl4(EtCN)2] is involved in platinum(IV)-mediated nitrile-imine coupling with the platinum(II)-based metallacycles [PtCl2{NH=C(NR2)N(Ph)C(=NH)N(Ph)C(NR2)=NH}] [R2 = Me2 (1a), C5H10 (1b)] yielding diplatinum products, whose structures depend on molar ratios between the reactants. At a 1...

An efficient ruthenium(IV) catalyst for the selective hydration of nitriles to amides in water under mild conditions.

Chemical communications (Cambridge, England)

Tomás-Mendivil E, Suárez FJ, Díez J, Cadierno V.
PMID: 25019325
Chem Commun (Camb). 2014 Sep 04;50(68):9661-4. doi: 10.1039/c4cc04058a.

A Ru(IV) catalyst able to promote the selective hydration of nitriles to amides in water, at low metal loadings and under mild conditions, is presented.

A radical anti-Markovnikov addition of alkyl nitriles to simple alkenes via selective sp(3) C-H bond functionalization.

Chemical communications (Cambridge, England)

Li Z, Xiao Y, Liu ZQ.
PMID: 25997410
Chem Commun (Camb). 2015 Jun 21;51(49):9969-71. doi: 10.1039/c5cc02968f.

An efficient hydrocyanoalkylation of unactivated alkenes with alkyl nitriles was developed. Through this free-radical-initiated selective activation of the α-C(sp(3))-H bond of acetonitriles, an anti-Markovnikov addition of an α-cyano C-centered radical to olefins has been achieved, which allows a facile...

Arylthio-metal exchange of α-arylthioalkanenitriles.

Organic letters

Nath D, Skilbeck MC, Coldham I, Fleming FF.
PMID: 24328754
Org Lett. 2014 Jan 03;16(1):62-5. doi: 10.1021/ol403020s. Epub 2013 Dec 12.

The addition of BuLi, Bu3MgLi, Et2ZnBuLi, or Me2CuLi to α-arylthioalkanenitriles triggers an arylthio-metal exchange. NMR spectroscopic analyses implicate organometallic attack on sulfur forming a three-coordinate sulfidate as the key intermediate. Electrophilic trapping affords tertiary and quaternary nitriles in high...

Transition-Metal-Free Deacylative Cleavage of Unstrained C(sp(3))-C(sp(2)) Bonds: Cyanide-Free Access to Aryl and Aliphatic Nitriles from Ketones and Aldehydes.

Organic letters

Ge JJ, Yao CZ, Wang MM, Zheng HX, Kang YB, Li Y.
PMID: 26704699
Org Lett. 2016 Jan 15;18(2):228-31. doi: 10.1021/acs.orglett.5b03367. Epub 2015 Dec 24.

A transition-metal-free deacylative C(sp(3))-C(sp(2)) bond cleavage for the synthetically practical oxidative amination of ketones and aldehydes to nitriles is first described, using cheap and commercially abundant NaNO2 as the oxidant and the nitrogen source. Various nitriles bearing aryl, heteroaryl,...

Can Nitriles Be Stronger Bases Than Proton Sponges in the Gas Phase? A Computational Analysis.

The journal of physical chemistry. A

Raczyńska ED, Makowski M, Maria PC, Gal JF.
PMID: 26111259
J Phys Chem A. 2015 Jul 23;119(29):8225-36. doi: 10.1021/acs.jpca.5b04617. Epub 2015 Jul 09.

DFT calculations have been performed for a series of push-pull nitriles [(R2N)n(X═Y)iC≡N, where i = 0, 1, or 2, n = 1, 2, or 3, R2N = H2N, Me2N, or C4H8N, X = CH, N, or P, Y =...

Spectroscopic and Computational Studies of Nitrile Hydratase: Insights into Geometric and Electronic Structure and the Mechanism of Amide Synthesis.

Chemical science

Light KM, Yamanaka Y, Odaka M, Solomon EI.
PMID: 26508996
Chem Sci. 2015 Nov 01;6(11):6280-6294. doi: 10.1039/C5SC02012C. Epub 2015 Jul 30.

Nitrile hydratases (NHases) are mononuclear nonheme enzymes that catalyze the hydration of nitriles to amides. NHase is unusual in that it utilizes a low-spin (LS) Fe

A photosensitizing decatungstate-based MOF as heterogeneous photocatalyst for the selective C-H alkylation of aliphatic nitriles.

Chemical communications (Cambridge, England)

Shi D, He C, Sun W, Ming Z, Meng C, Duan C.
PMID: 26954389
Chem Commun (Camb). 2016 Mar 28;52(25):4714-7. doi: 10.1039/c6cc00862c.

The efficient photosensitizing of decatungstate-based MOF with 1D channels was achieved via in situ synthesis under solvothermal conditions for light driven acceleration of β- or γ-site C-H alkylation of aliphatic nitriles. The high catalytic efficiency, excellent size selectivity, high...

Charge Effects in PCP Pincer Complexes of Ni(II) bearing Phosphinite and Imidazol(i)ophosphine Coordinating Jaws: From Synthesis to Catalysis through Bonding Analysis.

Chemistry (Weinheim an der Bergstrasse, Germany)

Vabre B, Canac Y, Lepetit C, Duhayon C, Chauvin R, Zargarian D.
PMID: 26449870
Chemistry. 2015 Nov 23;21(48):17403-14. doi: 10.1002/chem.201502491. Epub 2015 Oct 09.

This contribution reports on a new family of Ni(II) pincer complexes featuring phosphinite and functional imidazolyl arms. The proligands (R) PIMC(H) OP(R') react at room temperature with Ni(II) precursors to give the corresponding complexes [((R) PIMCOP(R') )NiBr], where (R)...

Showing 25 to 36 of 1327 entries