19986-84-6Relevant academic research and scientific papers
Controlled polymerization of styrene in the presence of Blatter’s radicals
Burdyukova, T. O.,Fedorov, A. Yu.,Grishin, I. D.,Kuznetsova, Yu. L.,Lopatin, M. A.,Malysheva, Yu. B.,Polozov, E. Yu.,Vavilova, A. S.,Zaburdaeva, E. A.
, p. 1470 - 1477 (2020)
Controlled polymerization of styrene (both self-initiated and initiated with azobisisobutyronitrile) in the presence of Blatter’s radical at 125 °C was studied. When using the radical initiator, there is no induction period. On the basis of UV spectroscopy and MALDI massspectrometry studies, it was established that the Blatter radical is completely consumed at the initial stage of the polymerization, inserting into almost all macromolecules. The prepared polystyrene exhibits the ability to reinitialization in post-polymerization and the synthesis of block copolymers.
C(3) Functional Derivatives of the Blatter Radical
Pomik?o, Dominika,Bodzioch, Agnieszka,Pietrzak, Anna,Kaszyński, Piotr
supporting information, p. 6995 - 6999 (2019/09/30)
A series of 3-substituted 1-phenyl-1,4-dihydrobenzo[e][1,2,4]triazin-4-yls 1 was prepared by addition of PhLi to 3-substituted benzo[e][1,2,4]triazines 2 followed by aerial oxidation. The scope of the C(3) substituents in the reaction was investigated, an
Preparation of Blatter Radicals via Aza-Wittig Chemistry: The Reaction of N-Aryliminophosphoranes with 1-(Het)aroyl-2-aryldiazenes
Savva, Anastasia C.,Mirallai, Styliana I.,Zissimou, Georgia A.,Berezin, Andrey A.,Demetriades, Marina,Kourtellaris, Andreas,Constantinides, Christos P.,Nicolaides, Constantinos,Trypiniotis, Theodossis,Koutentis, Panayiotis A.
, p. 7564 - 7575 (2017/07/26)
Reacting N-aryliminophosphoranes with 1-(het)aroyl-2-aryldiazenes in preheated diphenyl ether at ca. 150-250 °C for 5-25 min affords in most cases the 1,3-diaryl-1,4-dihydrobenzo[e][1,2,4]triazin-4-yls (aka Blatter radicals) in moderate to good yields. Al
Access to 1,4-Dihydrobenzo[e][1,2,4]triazin-4-yl Derivatives
Constantinides, Christos P.,Obijalska, Emilia,Kaszyński, Piotr
supporting information, p. 916 - 919 (2016/03/15)
A simple, one-pot method for the preparation of 1-aryl-3-phenyl-1,4-dihydrobenzo[e][1,2,4]triazin-4-yl radicals by addition of aryllithium to the readily available 3-phenylbenzo[e][1,2,4]triazine followed by aerial oxidation is described. The intermediate
TRIAZINE MEDIATED LIVING RADICAL CONTROLLED POLYMERIZATION
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, (2015/05/06)
The disclosure provides modular triazine-based unimolecular initiator compounds useful in controlled radical polymerizations of vinyl-containing monomers.
Route to benzo- and pyrido-fused 1,2,4-triazinyl radicals via N ′-(Het)aryl- N ′-[2-nitro(het)aryl]hydrazides
Berezin, Andrey A.,Zissimou, Georgia,Constantinides, Christos P.,Beldjoudi, Yassine,Rawson, Jeremy M.,Koutentis, Panayiotis A.
, p. 314 - 327 (2014/01/17)
A two-step route to 1,3-disubstituted benzo- and pyrido-fused 1,2,4-triazinyl radicals is presented. The route involves the N′-(2-nitroarylation) of easily prepared N′-(het)arylhydrazides via nucleophilic aromatic substitution of 1-halo-2-nitroarenes, which in most cases gives N′-(het)aryl-N′-[2-nitro(het)aryl]hydrazides in good yields. Mild reduction of the nitro group followed by an acid-mediated cyclodehydration gives the fused triazines, which upon alkali treatment afford the desired radicals. Fifteen examples of radicals are presented bearing a range of substituents at N-1, C-3, and C-7, including the pyrid-2-yl and 8-aza analogues. This route to the N′-(het)aryl-N′-[2-nitro(het)aryl]hydrazides, which works well with benzo- and picolinohydrazides, required a modification for aceto- and trifluoroacetohydrazides that involved a multistep synthesis of asymmetrically 1,1-diaryl-substituted hydrazines.
Synthesis of 7-aryl/heteraryl-1,3-diphenyl-1,2,4-benzotriazinyls via palladium catalyzed Stille and Suzuki-Miyaura reactions
Constantinides, Christos P.,Koutentis, Panayiotis A.,Loizou, Georgia
scheme or table, p. 3122 - 3125 (2011/05/12)
Stille and Suzuki-Miyaura reactions of 7-iodo-1,3-diphenyl-1,4-dihydro-1,2, 4-benzotriazin-4-yl are presented as rare examples of cross-coupling reactions with stable organic radicals. Both the Stille and Suzuki-Miyaura reactions are in most cases high yi
Catalytic oxidation of N -phenylamidrazones to 1,3-Diphenyl-1,4-dihydro-1, 2,4-benzotriazin-4-yls: An improved synthesis of blatters radical
Koutentis, Panayiotis A.,Lo Re, Daniele
experimental part, p. 2075 - 2079 (2010/08/13)
Blatters radical, 1,3-diphenyl-1,4-dihydro-1,2,4-benzotriazin-4-yl (1a, R =H), and several of its C-7 substituted analogues (R =CF3, Cl, Br, I, Me, OMe) were prepared in good-to-excellent yields through catalytic oxidation of the corresponding
A Study of 1,4-Dihydro-1,2,4-benzotriazinyl Radicals
Neugebauer, Franz Alfred,Umminger, Irmgard
, p. 1205 - 1225 (2007/10/02)
The thermal cyclization of the azo compounds 2 to yield the 1,4-dihydro-1,2,4-benzotriazines 5 facilitates the synthesis of 1,4-dihydro-1,2,4-benzotriazinyl radicals (4).A series of these radicals were prepared and studied in detail (chemical properties,
