73 research outputs found
A FUNÇÃO DA ESCRITA PARA O AUTISTA NAOKI HIGASHIDA
No full textThe present article starts a study that sought to understand a function of the writing for the author Naoki Higashida from his book "What makes me jump". The hypothesis raised for a writing makes possible a treatment of the voice and a stability of the signs, attending to the anxieties of the autism immutability. Starting from a psychoanalytic look on the voice and the autistic subjects, they were studied as supports of authors related to the subject, emphasizing as the supports of Higashida in its singularity in its relation with the writing. It was possible to conclude that the voice, as object, is something extracted by the autistic in its constitution, that is, the autist retains its voice. Higashida\u27s writing favors the sending of data to the outside world, since the work can be done, as well as the polysemy and the direct addressing of the voice to the other, not having the marked presence of this one. The continuity is once, the support by means of the double, the writing facilitates the communication with the letters, the indices and symbols, the access to the criteria of immobility sought by the author, besides enabling the connection and the social insertion.O presente artigo parte de um estudo que buscou compreender a função da escrita para o autista Naoki Higashida a partir do seu livro “O que me faz pular”. Diante da dificuldade que a voz falada apresenta para o autor, a hipótese levantada foi que a escrita viabiliza um tratamento da voz e a estabilidade dos signos, atendendo aos anseios de imutabilidade do autista. Partindo de um olhar psicanalítico sobre a voz e os sujeitos autistas, foram estudadas as contribuições de diversos autores relacionados ao tema, ressaltando as contribuições de Higashida em sua singularidade na sua relação com a escrita. Foi possível concluir que a voz, enquanto objeto a, não é algo extraído pelo autista em sua constituição, não favorecendo o endereçamento da voz ao outro, a partir da entrada na linguagem e, assim, o autista retém sua voz. A escrita de Higashida favorece à ele se conectar ao mundo externo, uma vez que possibilita o trabalho com signos, evitando polissemias e endereçamento direto da voz ao Outro, não havendo a presença marcante deste. A hipótese é confirmada uma vez que, sustentada pelo recurso ao duplo, a escrita proporciona tranquilidade ao lidar com letras, números e símbolos, atende aos critérios de imutabilidade buscado pelo autista, além de possibilitar a conexão e inserção social por meio dela
Um estudo psicanalítico sobre a escrita autobiográfica de dois autores autistas: Daniel Tammet e Naoki Higashida
No full textO objetivo desta pesquisa é refletir sobre a escrita autobiográfica produzida por autistas, por meio da qual relatam suas experiências e maneiras particulares de estar no mundo, as dificuldades encontradas na aquisição da linguagem, a apropriação da voz e o encontro com os outros. O eixo do estudo parte da leitura de duas obras autobiográficas: Nascido em um dia azul. Por dentro da mente de um autista extraordinário (2007), de Daniel Tammet, e O que me faz pular (2014), de Naoki Higashida. Daniel Tammet é um autista de alto funcionamento, com grandes habilidades matemáticas e capacidades consideráveis para aprender línguas, e descreve seu quadro autístico, seu pensamento alicerçado em imagens, o interesse por números, especialmente o número pi, e sua relação muito particular com a língua. Naoki Higashida é um adolescente que revela suas emoções, sentimentos e seu mundo permeado de sensibilidade e poesia, narrando vivências de sofrimento e angústia por não conseguir se comunicar com as pessoas; é um garoto que apresenta dificuldades para falar, porém, por meio da escrita, consegue transmitir sua singularidade e a maneira que encontrou para estabelecer laços sociais. Este estudo possui como fundamentação teórica e clínica a psicanálise lacaniana e procura destacar que essas produções autobiográficas ampliam e expandem a compreensão sobre os autismos. Os escritos autobiográficos revelam um saber próprio e, desse modo, contribuem para a clínica psicanalítica, possuindo importantes implicações no campo socialThe objective of this research is to reflect on the autobiographical and poetic writing produced by autistic subjects whereby they report their particular experiences and ways of being in the world. They especially describe the difficulties encountered in language acquisition and in voice appropriation. The focus of the study comes from the reading of two autobiographical works, initially ties Daniel Tammet's work “Born on a Blue Day” (2007) will be highlighted. He is a high-functioning autistic with great mathematical skills and considerable language learning capability. The author describes his autistic characteristic, his thoughts based on images, his interest in numbers and the particular relationship with language. Later the book “What makes me jump” (2014) by Naoki Higashida, a teenager who reveals his emotions, feelings and his world permeated with sensitivity and poetry. The author narrates experiences of suffering and anguish for not being able to communicate with people. Naoki is a boy who does not speak, but it is through writing that he can transmit his singularity and the way he found to establish social. This study has as its theoretical and clinical foundation in the lacanian psychoanalysis and seeks to give focus on the fact that these productions broaden and expand the understanding of autisms. The autobiographical writings reveal their own knowledge, and thus contribute to the psychoanalytic clinic, and have important implications in the social fiel
-Nucleophiles to Nonactivated Alkynes
No full textA gold(I) complex bearing an imidazo[1,5-a]pyridin-3-ylidene ligand with a 2,2'-bipyridine moiety at the C5 position was prepared as a template for constructing heterobimetallic cooperative catalysts. In situ generated gold-zinc bimetallic systems enabled intermolecular nucleophilic anti-addition of O-nucleophiles such as carboxylic acids and phenols toward nonactivated internal alkynes. DFT calculations supported the proposed cooperative action of the cationic gold atom and the zinc salt site for activating the alkyne and the carboxylic acid, respectively
Nickel-Catalyzed Homocoupling of Aryl Ethers with Magnesium Anthracene Reductant
No full textNickel-catalyzed reductive homocoupling of aryl ethers has been achieved with Mg(anthracene)(thf)(3) as a readily available low-cost reductant. DFT calculations provided a rationale for the specific efficiency of the diorganomagnesium-type two-electron reducing agent. The calculations show that the dianionic anthracene-9,10-diyl ligand reduces the two aryl ether substrates, resulting in the homocoupling reaction through supply of electrons to the Ni-Mg bimetallic system to form organomagnesium nickel(0)-ate complexes, which cause two sequential C-O bond cleavage reactions. The calculations also showed cooperative actions of Lewis acidic magnesium atoms and electron-rich nickel atoms in the C-O cleavage reactions
Use of Imidazo[1,5-a]pyridin-3-ylidene as a Platform for Metal-Imidazole Cooperative Catalysis: Silver-Catalyzed Cyclization of Alkyne-Tethered Carboxylic Acids
No full textSilver complexes with 5-(4-(tert-butyl)-1H-imidazol-1-yl)-imidazo[1,5-a]pyridin-3-ylidene ligands were synthesized as metal-imidazole acid-base cooperative catalysts. Single crystal XRD analysis revealed that the silver atom was located in the vicinity of the imidazole ring and that cationic silver complexes formed dimers through coordination between the silver metal and the imidazole pendant. These cationic silver complexes served as catalysts for cyclization of alkyne-tethered carboxylic acids. NMR experiments indicated that the dimeric cationic silver complex dissociated to a monomer upon protonation of the imidazole moiety, resulting in coordination of an acetonitrile to the silver atom. DFT calculations supported the acid-base cooperative action of the silver-imidazole for the efficient alkyne-carboxylic acid cyclization
]pyridazine‐7‐ylidene: Synthesis of Trinuclear Heterobimetallic Complexes Involving Gold‐Metal Interactions
No full textAs a dimetal-binding rigid scaffold, 2-(pyridin-2-yl)imidazo[1,5-b]pyridazine-7-ylidene was introduced. The scaffold was first converted into a meridional Au,N,N-tridentate ligand through binding of a Au(I)Cl moiety at the carbene center. The Au(I) center and the N,N-chelating moiety were expected to function as metallophilic and 4e-& sigma;-donative interaction sites, respectively, in the binding of the second metal center. In this manner, various trinuclear heterobimetallic complexes were synthesized with different 3d-metal sources, such as cationic Cu-I, Cu-II, Ni-II, and Co-II salts. SC-XRD analysis showed that the mono-3d-metal di-gold(I) trinuclear heterobimetallic complexes were constructed through gold(I)-metal interactions. Metallophilic interactions were also investigated by quantum chemical calculations including the AIM and IGMH methods
Nickel-Catalyzed Defluorophosphonylation of Aryl Fluorides
No full textA Ni-catalyzed cross-coupling reaction between aryl fluorides and dialkyl phosphonates [HP(O)(OR)2] (R = secondary alkyl groups) in the presence of potassium tert-butoxide as a base is reported. The reaction converted various aryl fluorides into the corresponding aryl phosphonates even when electron-donating substituents were present on the aromatic ring. The combined experimental and computational studies suggested Ni-K+ cooperative action of a Ni(0) complex chelated with a strongly electron-donating ion-bridged dimeric phosphite ligand system [P(OR)2O-K+]2 that facilitates turnover-limiting C-F bond oxidative addition of aryl fluorides
Synthesis of C,N,N-Cyclometalated Gold(III) Complexes with Anionic Amide Ligands
No full textA series of neutral C,N,N Au(III) complexes were synthesized with N -(8-quinolinyl)benzamide derivatives or chiral N -[2-(1,3-oxazolin-2-yl)phenyl]benzamide derivatives. The convenient synthesis method for the amide ligands, together with their operationally simple complexation by direct C-H auration, permitted changes to both the steric and electronic properties of Au(III) complexes for promoting the catalytic three-component couplings of an aldehyde, an amine, and an alkyne
Photocatalytic 1,2-Phosphorus-Migrative [3+2] Cycloaddition of Tri(t-butyl)phosphine with Terminal Alkynes
No full textTri(t-butyl)phosphine and terminal alkynesundergo1,2-phosphorus-migrative [3 + 2] cycloaddition in the presence ofa proton source under photocatalytic conditions. The reaction exhibitsbroad functional group tolerance and affords substituted cyclic phosphoniumsalts, which are amenable to further derivatization by Wittig olefination.Theoretical studies suggest that the phosphorus 1,2-migration of a & beta;-phosphonioalkyl radical proceeds through a phosphine radicalcation-alkene complex as a pseudointermediate, and the twofragments in the intermediate are bound to each other through multiplenoncovalent interactions
]pyridin‐3‐ylidene as a Platform for Metal‐Imidazole Cooperative Catalysis: Silver‐Catalyzed Cyclization of Alkyne‐Tethered Carboxylic Acids
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