cas 4073-98-7, 4,4'-Methylenebis(2,6-dimethylaniline)

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Highly regioselective para-methylthiolation/bridging methylenation of arylamines promoted by NH4I
Aryl methyl thioethers and methylene-bridged arylamines were synthesized via highly regioselective para-methylthiolation/bridging methylenation of arylamines using DMSO as the methylthio or methylene source in the presence of NH4I under metal-free conditions. For the substrates with both electron-donating and electron-withdrawing substituents, the reaction proceeded smoothly and gave moderate to good yields.
Xu, Yinfeng,Cong, Tiantian,Liu, Ping,Sun, Peipei
supporting information
p. 9742 - 9745
(2015/10/05)

Design of postmetallocene Schiff base-like catalytic systems for polymerization of olefins: XII. Synthesis of tetradentate bis-salicylaldehyde imine ligands
Reactions of salicylaldehyde, 3-tert-butylsalicylaldehyde, and 3,5-di-tert-butylsalicylaldehyde with 1,4-diaminobutane, 1,6-diaminohexane, 4,4′-diaminodiphenylmethane, 4,4′-diamino-3,3′,5,5′- tetramethyldiphenylmethane, 4,4′-diamino-5,5′-dicyclopentyl-3, 3′-dimethyldiphenylmethane, 4,4′-diamino-5,5′-dicyclohexyl-3, 3′-dimethyldiphenylmethane, bis(4-aminophenyl) sulfone, o,o′- and p,p′-diaminodiphenyl ethers, 1,4-bis(4-aminophenoxy)benzene, 2,2-bis[4-(4-aminophenoxy) phenyl]propane, and 4,4″-diamino-p-terphenyl gave a series of the corresponding Schiff bases which can be used as tetradentate ligands for the synthesis of titanium and zirconium complexes.
Oleinik,Oleinik,Ivanchev,Tolstikov
experimental part
p. 528 - 535
(2009/08/17)

TRANSITION METAL COMPOUNDS FOR OLEFIN POLYMERIZATION AND OLIGOMERIZATION
This invention relates to new transition metal catalyst compounds represented by the formula (I): where: M and M' are, independently, a group 8, 9, 10 or 11 transition metal, preferably Ni, Co, Pd, Cu or Fe; each R group is, independently, is, hydrogen, or a hydrocarbyl, substituted hydrocarbyl, halocarbyl, substituted halocarbyl, silylcarbyl, substituted silylcarbyl, germylcarbyl, or substituted germylcarbyl substituents, and optionally, adjacent R groups may join together to form a substituted or unsubstituted, saturated, partially unsaturated, or aromatic cyclic or polycyclic substituent; R' is hydrogen, or a hydrocarbyl, substituted hydrocarbyl, halocarbyl, substituted halocarbyl, silylcarbyl, substituted silylcarbyl, germylcarbyl, or substituted germylcarbyl substituents, and optionally, adjacent R groups may join together with R' to form a substituted or unsubstituted, saturated, partially unsaturated, or aromatic cyclic or polycyclic substituent; each X group is, independently, is, hydrogen, a halogen, or a hydrocarbyl, substituted hydrocarbyl, halocarbyl, substituted halocarbyl, silylcarbyl, substituted sililcarbyl, germylcarbyl, or substituted germylcarbyl substituents, and optionally, adjacent X groups may join together to form a substituted or unsubstituted, saturated, partially unsaturated, or aromatic cyclic or polycyclic substituent; m and m’ are, independently, 0, 1, 2, or 3; z and z’ are, independently, 0, 1, 2, or 3; N is nitrogen; Q is hydrogen, or a hydrocarbyl, substituted hydrocarbyl, halocarbyl, substituted halocarbyl, silylcarbyl, substituted silylcarbyl, germylcarbyl, or substituted germylcarbyl substituents; Q’ is hydrogen, or a hydrocarbyl, substituted hydrocarbyl, halocarbyl, substituted halocarbyl, silylcarbyl, substituted silylcarbyl, germylcarbyl or substituted germylcarbyl substituents; and L is a hydrocarbyl, substituted hydrocarbyl, halocarbyl, substituted halocarbyl, silylcarbyl, substituted silylcarbyl, germylcarbyl, or substituted germylcarbyl substituent.
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Page/Page column 107

(2010/02/15)

Chiral polyesters with azobenzene moieties in the main chain, synthesis and evaluation of nonlinear optical properties
The synthesis, characterization and evaluation of nonlinear optical properties of a new series of chiral copolyesters containing push-pull electronic azobenzene mesogenic groups in the main chain are reported. The copolyesters showed liquid crystalline behaviour with high glass transition temperatures (~200 °C), stable liquid crystalline mesophases (up to 360 °C) and high second harmonic generation (SHG) efficiency. The second order nonlinear susceptibility values were measured as a function of the percentage of the chiral building unit and the temporal stability was found to be significant over a long duration of time.
Bahulayan, Damodaran,Sreekumar, Krishnapillai
p. 1425 - 1429
(2007/10/03)

Process of preparing substituted anilines
Novel anilines of the 2,6-dialkyl-4-dialkylaminomethylaniline type are prepared by reacting a secondary amine and an aldehyde with a primary aniline reactant having a free para position and substituents in both ortho positions in the presence of an acid catalyst, the amounts of amine and acid employed being at least equimolar with respect to the amount of aldehyde, and the reaction being conducted by adding the primary aniline reactant to a preformed mixture of the secondary amine, aldehyde, and acid.
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(2008/06/13)

ACID CATALYZED HETEROLYSIS OF A PYRAZOL α-CHLOROACETANILIDE DERIVATIVE WITH ALKYL-AMIDONITROGEN FISSION
The base-catalyzed hydrolysis of 2-chloro-N-(2,6-dimethylphenyl)-N-(1H-pyrazol-1-ylmethyl)-acetamide (1) generated 2-hydroxy-N-(2,6-dimethylphenyl)-N-(1H-pyrazol-1ylmethyl)-acetamide (2).The acid-catalyzed hydrolysis of compound 1 generated after a short time 2-chloro-N-(2,6-dimethyl)-acetamide (3) and pyrazol (5); after a longer period of time, 4,4'-methylenebis-(2,6-dimethylbenzenamine) (4) and pyrazol (5) were formed; compound 4 was formed by condensation of the non isolated intermediates 2,6-dimethylaniline and formaldehyde.Thus the base-catalyzed hydrolysis of compound 1 did not cleave the amide; the acid-catalyzed one first cleaved the N-amido-alkyl bond; then, the Namido-acyl bond, the hydrolysis products condensing simultaneously together to give the unexpected compound 4.
Rouchaud, Jean,Metsue, Marc,Gustin, Fabrice,Moulart, Claude,Herin, Marc
p. 319 - 326
(2007/10/02)

Chemical process for preparing methylene bis-anilines
Aromatic amine hydrochloride having an unsubstituted ortho or para position reacts with dimethylsulfoxide forming methylenebis aromatic amine.
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(2008/06/13)

Alkylidene Transfer from Monochloroalkylmercury(II) Compounds to Aromatic Amines; Selective C-Alkylation
αα-Diarylalkane derivatives have been synthesized from monochloroalkylmercury(II) compounds in a noncarbenoid alkylidene transfer reaction which takes place selectively on the aromatic ring.A mechanism is suggested for this process.Intermediate products are prepared by alternative routes to ascertain their participation in the course of the reaction.As a consequence, two different aryl groups can be successively incorporated into the alkane molecule.
Barluenga, Jose,Campos, Pedro J.,Roy, Miguel A.,Asensio, Gregorio
p. 1420 - 1426
(2007/10/02)