33950-59-3Relevant academic research and scientific papers
Nickel-catalyzed Suzuki-Miyaura coupling of heteroaryl ethers with arylboronic acids
Li, Xiao-Jian,Zhang, Jin-Ling,Geng, Yu,Jin, Zhong
, p. 5078 - 5084 (2013/06/27)
Nickel-catalyzed Suzuki-Miyaura coupling of heteroaryl ethers with arylboronic acids was described. Selective activation of the phenol C-O bonds was achieved by converting them into the corresponding aryl 2,4-dimethoxy-1,3,5- triazine-6-yl ethers, in which aryl C-O bond could be selectively cleaved with inexpensive, air-stable NiCl2(dppf) as a catalyst. Coupling of these readily accessible heteroaryl ethers proved tolerant of extensive functional groups.
Tunneling effects on the 1,3-sigmatropic hydrogen shift in the photo-Fries rearranged intermediate of 2,4-dimethoxy-6-(p-tolyloxy)-s-triazine
Kimura, Yukihiro,Kakiuchi, Naoya,Tobita, Seiji,Shizuka, Haruo
, p. 3077 - 3085 (2007/10/03)
Kinetic studies on the 1,3-sigmatropic hydrogen shift in the photo-Fries rearranged intermediate of 2,4-dimethoxy-6-(p-tolyloxy)-s-triazine (PTTH) were carried out in various solvents by using laser flash photolysis techniques. The intrinsic rate constant
Stepwise versus concerted mechanisms at trigonal carbon: Transfer of the 1,3,5-triazinyl group between aryl oxide ions in aqueous solution
Renfrew, A. Hunter M.,Rettura, Donatella,Taylor, John A.,Whitmore, James M. J.,Williams, Andrew
, p. 5484 - 5491 (2007/10/02)
Displacements of 4-nitrophenolate ions from 2-(4-nitrophenoxy)-4,6-dimethoxy-1,3,5-triazine by substituted phenolate ions in aqueous solution obey a linear Br?nsted-type equation, log kArO = 0.951pKa - 10.98, over a range of pKa values greater than and less than the pKa of the leaving phenol. The absence of curvature is consistent with a mechanism involving a single transition state. This conclusion is supported by the existence of cross-correlation effects (Pxy = 0.0561) on βnuc of the pKa of the leaving group and on β1g of the pKa of the nucleophile on β1g. The value of βeq, the Br?nsted selectivity for transfer of the triazinyl function between phenolate ions, is calculated from the Br?nsted data to be 1.48. The identity reaction of 3,4-dinitrophenolate ion with the (3,4-dinitrophenoxy)triazine is calculated to have a Kreevoy-Albery τ value of 1.04, indicating that in this case changes in effective charge on entering and leaving ligands are approximately balanced.
Photo-deterioration inhibitor and composition containing the same
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, (2008/06/13)
A photo-deterioration inhibitor containing a compound represented by the general formula (I): where R1 and R2 may be same or different and represent hydrogen, chlorine, hydroxyl group, alkoxy group having 1-18 carbon atoms, aryloxy group having 6-8 carbon atoms and mono- or dialkylamino group having 1-4 carbon atoms, respectively, and R3 and R4 may be same or different and represent hydrogen, chlorine, alkyl group having 1-8 carbon atoms, methoxy group and ethoxy group; a photo-deterioration inhibitory resin composition containing a polyolefin resin or polyolefin resin composition and the compound represented by the general formula (I); and a container formed from the photo-deterioration inhibitory resin composition containing the polyolefin resin or polyolefin resin composition and the compound represented by the general formula (I).
