506-59-2Relevant articles and documents
Dihydrogen bond intermediated alcoholysis of dimethylamine-borane in nonaqueous media
Golub, Igor E.,Gulyaeva, Ekaterina S.,Filippov, Oleg A.,Dyadchenko, Victor P.,Belkova, Natalia V.,Epstein, Lina M.,Arkhipov, Dmitry E.,Shubina, Elena S.
, p. 3853 - 3868 (2015)
Dimethylamine-borane (DMAB) acid/base properties, its dihydrogen-bonded (DHB) complexes and proton transfer reaction in nonaqueous media were investigated both experimentally (IR, UV/vis, NMR, and X-ray) and theoretically (DFT, NBO, QTAIM, and NCI). The e
Dehydropyrroliumsalze
Gompper, Rudolf,Junius, Martina
, p. 2883 - 2886 (1980)
Reaction of pentachloro-2H-pyrrole with trimethylsilyldimethylamine gives azacyclopentadienylium chlorides which can be converted into inverse polarized azacyclopentadienones and 1-azafulvenes.
The enthalpies of formation of bis(dimethylamino)cyanophosphine, (dimethylamino)dicyanophosphine, and tricyanophosphine
Al-Maydama, H. M. A.,Finch, Arthur,Gardner, P. J.,Head, A. J.
, p. 575 - 584 (1995)
The standard molar enthalpies of formation at the temperature 298.15 K of 2PCN(l), (CH3)2NP(CN)2(l), and P(CN)3(cr) have been determined by reaction calorimetry as -(0.4 +/- 3.2) kJ * mol-1, (189.3 +/- 5.0) kJ * mol-1, and (373.1 +/- 6.8) kJ * mol-1, respectively.Enthalpies of vaporization have been obtained from vapour-pressure measurements for the first two compounds and the corresponding values of ΔfH0m(g)/(kJ * mol-1) derived as (54.2 +/- 3.5), (228.7 +/- 5.5), and 448.4 +/- 7.4), respectively.The values of the bond enthalpies D(P-CN) in the cyanophosphines are discussed.
Studies in Cyclophosphazenes. Part 9. Influence of the Steric Requirements of the Amino-substituents on the Rates of Amination of 2-Amino-2,4,4,6,6-pentachlorocyclotri(λ5-phosphazenes)
Goldschmidt, Jacob M.E.,Licht, Eliahu
, p. 107 - 110 (1981)
Measurements of the rates of amination of a number of aminopentachlorotriphosphazenes, N3P3Cl5(NRR') (R = n-Bu, R' = H; R = R'=n-Bu; R = i-Pr, R' = H; RR' = C5H10), with dimethylamine to give non-geminal disubstituted products have been made at two temperatures in tetrahydrofuran with the aim of elucidating the steric effects of the amino-substituents in these reactions.The values of the rate constants and of the activation parameters determined showed that steric effects are only very small.To resolve the conflict between these findings and others in literature in which appreciable steric influences were observed, the division of these amination reactions into three classes, each of which is affected by stric factors in its own way, is proposed.This enables much of the kinetic and preparative data on steric effects in these reactions to be rationalised in the framework of one general hypothesis.
Copper(II) complexes of tetradentate N2S2 donor sets: Synthesis, crystal structure characterization and reactivity
Sarkar,Patra,Drew,Zangrando,Chattopadhyay
, p. 1 - 6 (2009)
Two mononuclear and one dinuclear copper(II) complexes, containing neutral tetradentate NSSN type ligands, of formulation [CuII(L1)Cl]ClO4 (1), [CuII(L2)Cl]ClO4 (2) and [CuIIsub
Norbornane-2-spiro-α-cycloalkanone-α′-spiro-2″-norbornane-5,5″,6,6″-tetracarboxylic dianhydride, norbornane-2-spiro-α-cycloalkanone-α′-spiro-2″-norbornane-5,5″,6,6″-tetracarboxylic acid and ester thereof, method for producing norbornane-2-spiro-α-cycloalkanone-α′-spiro-2″-norbornane-5,5″,6,6″-tetracarboxylic dianhydride, polyimide obtained by using the same, and method for producing polyimide
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Page/Page column 55, (2016/10/17)
A norbornane-2-spiro-α-cycloalkanone-α′-spiro-2″-norbornane-5,5″,6,6″-tetracarboxylic dianhydride represented by the following general formula (1): wherein the formula (1), n represents an integer of 0 to 12, and R1s, R2, R3 each independently represents a hydrogen atom or the like.
Stereoselective synthesis of (S)-dapoxetine: A chiral auxiliary mediated approach
Khatik, Gopal L.,Sharma, Ratnesh,Kumar, Varun,Chouhan, Mangilal,Nair, Vipin A.
, p. 5991 - 5993 (2013/10/22)
An imidazolidin-2-one chiral auxiliary mediated acetate aldol reaction was explored in the enantioselective synthesis of (S)-dapoxetine (SSRI). The diastereoselective aldol adduct was transformed to highly enantiopure (S)-dapoxetine with overall good yield.
Nucleophilic substitution reaction at the nitrogen of arylsulfonamides with phosphide anion
Yoshida, Suguru,Igawa, Kazunobu,Tomooka, Katsuhiko
supporting information, p. 19358 - 19361 (2013/02/22)
A novel nucleophilic substitution reaction at the nitrogen of arylsulfonamides by means of phosphide anions has been described. This reaction allows for the efficient transformation of arylsulfonamides into synthetically valuable phosphamides, amines, and a variety of protected amines.
Highly chemoselective Pd-C catalytic hydrodechlorination leading to the highly efficient N-debenzylation of benzylamines
Cheng, Chuanjie,Sun, Jianwei,Xing, Lixin,Xu, Jimin,Wang, Xinyan,Hu, Yuefei
supporting information; experimental part, p. 5671 - 5674 (2009/12/08)
(Equation Presented) In the presence of 1,1,2-trichloroethane, a novel procedure for the Pd-C catalytic N-debenzylation of benzylamines was established. The method proceeded in a synergistic catalytic system and directly gave the products as crystal amine hydrochlorides in practically quantitative yields.
Ammonia-dimethylchloramine system: Kinetic approach in an aqueous medium and comparison with the mechanism involving liquid ammonia
Stephan,Pasquet,Elkhatib,Goutelle,Delalu
, p. 340 - 351 (2008/09/21)
After an exhaustive study of the system ammonia-dimethylchloramine in liquid ammonia, it was interesting to compare the reactivity of this system in liquid ammonia with the same system in an aqueous medium. Dimethylchloramine prepared in a pure state undergoes dehydrohalogenation in an alkaline medium: the principal products formed are N-methylmethanimine, 1,3,5- trimethylhexahydrotriazine, formaldehyde, and methylamine. The kinetics of this reaction was studied by UV, GC, and HPLC as a function of temperature, initial concentrations of sodium hydroxide, and chlorinated derivative. The reaction is of the second order and obeys an E2 mechanism (k1 =4.2 × 10-5 M-1 s-1, ΔH# = 82 kJ mol-1, ΔS# = -59 J mol-1 K-1) The oxidation of unsymmetrical dimethylhydrazine by dimethylchloramine involves two consecutive processes. The first step follows a first-order law with respect to haloamine and hydrazine, leading to the formation of an aminonitrene intermediate (k2 = 150 × 10-5 M-1 s -1). The second step corresponds to the conversion of aminonitrene into formaldehyde dimethylhydrazone at pH 13). This reaction follows a first-order law (k3 = 23.5 × 10-5 s-1) The dimethylchloramine-ammonia interaction corresponds to a SN2 bimoiecular mechanism (k4 = 0.9 × 10-5 M-1 s -1, pH 13, and T =25°C). The kinetic model formulated on the basis of the above reactions shows that the formation of the hydrazine in an aqueous medium comes under strong competition from the dehydrohalogenation of dimethylchloramine and the oxidation of the hydrazine formed by the original chlorinated derivative. A global model that explains the mechanisms both in an anhydrous and in an aqueous medium was elaborated.
