36132-68-0Relevant academic research and scientific papers
Oxidative Rearrangement of Primary Amines Using PhI(OAc)2 and Cs2CO3
Yamakoshi, Wataru,Arisawa, Mitsuhiro,Murai, Kenichi
supporting information, (2019/05/08)
An oxidative rearrangement of primary amines mediated by a hypervalent iodine(III) reagent is herein reported. The combination of PhI(OAc)2 and Cs2CO3 proves highly efficient at inducing the direct 1,2-C to N migration of primary amines, which can be applied to the preparation of both acyclic and cyclic amines. A mechanistic study shows that the rearrangement proceeds via a concerted mechanism.
Synthesis of 3-Sulfonylamino Quinolines from 1-(2-Aminophenyl) Propargyl Alcohols through a Ag(I)-Catalyzed Hydroamination, (2 + 3) Cycloaddition, and an Unusual Strain-Driven Ring Expansion
Kumar, Yalla Kiran,Kumar, Gadi Ranjith,Reddy, Thota Jagadeshwar,Sridhar, Balasubramanian,Reddy, Maddi Sridhar
, p. 2226 - 2229 (2015/05/13)
We describe herein a silver-catalyzed conversion of 1-(2-aminophenyl)-propargyl alcohols to 4-substituted 3-tosylaminoquinolines using TsN3 as an amino surrogate. Controlled reactions reveal the pathway consisting of Ag(I)-catalyzed 5-exo-dig cyclization, catalyst-free (2 + 3) cycloaddition, and ring-expansive rearrangement via nitrogen expulsion. As a support study, we show that the cyclic enamines in similar conditions produce amidines via a C - C bond migration. (Chemical Equation Presented).
Transition Metal Complexes and Preparation Methods Thereof
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Page/Page column 12, (2009/02/11)
The present invention provides a novel mononuclear transition metal compound, a novel binuclear transition metal compound, a novel organic amine or phosphorous compound, and a method for preparing the same. The mononuclear transition metal compound accord
Synthesis and nematicidal activity of 2-(1H-benzo[d]imidazol-2-ylmethyl)-4- aryl-1-thia-4-azaspiro[4.5]decan-3-one
Srinivas,Nagaraj,Reddy, Ch. Sanjeeva
, p. 787 - 791 (2008/12/20)
A series of N-cyclohexylidene-N-phenylamines 3 are prepared by the condensation of cyclohexanone 1 with aryl amine 2, subsequent treatment of 3 with thiomalic acid give the corresponding 2-(3-oxo-4-aryl-1-thia-4-azaspiro[4. 5]dec-2-yl)acetic acid 4, which
CATALYST COMPOSITION COMPRISING GROUP 4 TRANSITION METAL COMPLEXES AND METHOD FOR PREPARING POLYOLEFINS USING THE SAME
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Page/Page column 19, (2010/11/28)
The present invention relates to a catalyst composition comprising a novel structure of a Group 4 transition metal compound, to a method for preparing the same, and to a method for preparing a polyolefin using the catalyst composition. The method for prep
TRANSITION METAL COMPLEXES AND PREPARATION METHODS THEREOF
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Page/Page column 26, (2010/11/28)
The present invention provides a novel mononuclear transition metal compound, a novel binuclear transition metal compound, a novel organic amine or phosphorous compound, and a method for preparing the same. The mononuclear transition metal compound accord
Method for preparing aromatic secondary amino compound
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, (2008/06/13)
Disclosed are (1) a method for preparing an aromatic secondary amino compound which comprises reacting an N-cyclohexylideneamino compound in the presence of a hydrogen moving catalyst and a hydrogen acceptor by the use of a sulfur-free polar solvent and/or a cocatalyst, and (2) a method for preparing an aromatic secondary amino compound which comprises reacting cyclohexanone or a nucleus-substituted cyclohexanone, an amine and a nitro compound corresponding to the amine in a sulfur-free polar solvent in the presence of a hydrogen moving catalyst, a cocatalyst being added or not added. In a further aspect, a method is provided for the preparation of aminodiphenylamine by reacting phenylenediamine and cyclohexanone in the presence of a hydrogen transfer catalyst in a sulfur-free polar solvent while using nitroaniline as a hydrogen acceptor.
Radical cyclisations of imines and hydrazones
Bowman, W. Russell,Stephenson, Peter T.,Terrett, Nicholas K.,Young, Adrian R.
, p. 7959 - 7980 (2007/10/02)
Radical cyclisation of sp3 carbon-centred radicals onto imines and hydrazones provides a new method for the synthesis of 5- and 6-membered ring nitrogen heterocycles. Cyclisation onto the electrophilic carbon of the C=N group and 5-exo stereoelectronic selectivity are the dominating mechanistic parameters. The C-centred radical intermediates were generated from benzeneselenyl precursors using Bu3SnH.
SYNTHESIS AND NITRATION OF 4,6(4,8)-DIMETHYL-4-METHYL-6(8)-METHOXY-1,2,3,4-TETRAHYDROSPIRO
Kuznetsov, V. V.,Pal'ma, A.,Aliev, A. E.,Fernandes, M.,Prostakov, N. S.,Varlamov, A. V.
, p. 671 - 675 (2007/10/02)
The cyclization of 1-allyl-1-arylaminocyclohexanes under conditions of acid catalysis afforded 1,2,3,4-tetrahydro-4-methylspiro methyl (methoxy)-substituted in the phenylene ring.Their mono- and dinitro derivatives were synthesiz
Imine-enamine tautomerism in the anils of cyclohexanone and 2-(β-cyanoethyl)cyclohexanone
Kayukova, L. A.,Erzhanov, K. B.,Umarova, Z. N.
, p. 111 - 119 (2007/10/02)
The products from the condensation of cyclohexanone and 2-(β-cyanoethyl)cyclohexanone with para- and ortho-disubstituted anilines in 10percent solutions in carbon tetrachloride exist as mixtures of the imine and enamine tautomers.The tautomeric compositio
