Výsledky vyhledávání - "Miguel J. Dabdoub"

Akademický článek

Comportamento espacial da demanda energética em semeadura de amendoim em latossolo sob preparo convencional Spatial behavior of energetic demand in peanut sowing in latosol under conventional tillage

Autor: Anderson de Toledo, Carlos E. A. Furlani, Rouverson P. da Silva, Afonso Lopes, Miguel J. Dabdoub

Publikováno v: Engenharia Agrícola, Vol 30, Iss 3, Pp 459-467 (2010)

A mecanização desempenha papel fundamental na produção agrícola e, consequentemente, na composição dos custos. Os adequados planejamento e gerenciamento dos sistemas mecanizados contribuem para a racionalização e redução dos gastos e melho

Externí odkaz: https://doaj.org/article/1e1f21a452a0486f880f6a21d949c724

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Akademický článek

Biodiesel de mamona no diesel interior e metropolitano em trator agrícola Mamona biodiesel in interior and metropolitan diesel in agricultural tractor

Autor: Rubens A. Tabile, Afonso Lopes, Miguel J. Dabdoub, Felipe T. da Camara, Carlos E. A. Furlani, Rouverson P. da Silva

Publikováno v: Engenharia Agrícola, Vol 29, Iss 3, Pp 412-423 (2009)

A demanda de recursos energéticos pelos sistemas de produção, aliada à escassez dos combustíveis fósseis, tem motivado a produção do Biodiesel, que é um combustível obtido de fontes renováveis. O objetivo deste trabalho foi realizar dois e

Externí odkaz: https://doaj.org/article/00a5c18e84cc4c7f8a8d6a79d9300eec

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Akademický článek

Biodiesel: visão crítica do status atual e perspectivas na academia e na indústria Biodiesel: a critical overview on the current status and perspectives at the academy and industry

Autor: Miguel J. Dabdoub, João L. Bronzel, Márcia A. Rampin

Publikováno v: Química Nova, Vol 32, Iss 3, Pp 776-792 (2009)

This article presents a bibliographic review of research carried out on different alternative processes for biodiesel production. The supercritical and subcritical (non catalytic) reaction conditions, the use of solid basic, solid acid and other hete

Externí odkaz: https://doaj.org/article/623872c628fa4a78bffa75afb1a253e0

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Akademický článek

'Green chemistry': os 12 princípios da química verde e sua inserção nas atividades de ensino e pesquisa Green chemistry: the 12 principles of green chemistry and it insertion in the teach and research activities

Autor: Eder João Lenardão, Rogério Antônio Freitag, Miguel J. Dabdoub, Antônio C. Ferreira Batista, Claudio da Cruz Silveira

Publikováno v: Química Nova, Vol 26, Iss 1, Pp 123-129 (2003)

Green chemistry ¾ defined as the design, development, and application of chemical processes and products to reduce or eliminate the use and generation of substances hazardous to human health and the environment. This article summarizes the 12 princi

Externí odkaz: https://doaj.org/article/17d04dc0a99145f8af3e23c13376f758

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Synthesis of 3-iodothiophenes via iodocyclization of (Z)-thiobutenynes

Autor: Sandro L. Barbosa, Luiz Henrique Viana, Gabriela R. Hurtado, Marcos Serrou do Amaral, Adriano C. M. Baroni, Diego B. Carvalho, Nadla S. Cassemiro, Miguel J. Dabdoub, Nájla Mohamad Kassab, Amanda S. Santana, Palimécio G. Guerrero

Publikováno v: Tetrahedron Letters. 55:52-55

A simple synthesis of 3-iodothiophenes was demonstrated using a wide range of (Z)-thioenynes. The key step in the iodocyclofunctionalization was the selective reduction of the triple bond in (Z)-thioenynes by the addition of iodine as an electrophili

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3f32947a7cb0efeb0697587db54102b
https://doi.org/10.1016/j.tetlet.2013.10.118

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Synthesis of (Z)-tributylstannyl enynes: systematic studies of Sonogashira cross-coupling reactions between (E)-1-iodovinyl-1-tributylstannanes and terminal acetylenes using amines or tetrabutylammonium hydroxide (TBAOH) as activator

Autor: Gabriela R. Hurtado, V B Dabdoub, Sandro L. Barbosa, Palimécio G. Guerrero, Miguel J. Dabdoub, Adriano C. M. Baroni, Carlos Alexandre Carollo, Amanda S. Santana, Cristiane Y. Kawasoko, Francisco A. Marques, Carlos Eduardo Domingues Nazario, Luiz Henrique Viana

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

Sonogashira cross-coupling reactions involving ( E )-iodo vinyl stannanes and terminal acetylenes were carried out in the presence of Pd(PPh 3 ) 4 , CuI and several amines, affording ( Z )-tributylstannyl enynes in moderate to good yields (62–91%).

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f36e5c552e8448e6bc64c7a36d2b7029

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One-pot synthesis of mixed ( )-1,2-bis(organylchalcogene)-1-alkenes precursors of the novel β-organylthio vinyllithium intermediates

Autor: Paulo R. de Oliveira, Marco Aurélio Pereira, Miguel J. Dabdoub, Adriano C. M. Baroni, Palimécio G. Guerrero, Vania B. Dabdoub, Francisco A. Marques

Publikováno v: Tetrahedron Letters. 51:5141-5145

One-pot hydrochalcogenation of 1-phenylthioacetylenes using organylselenolate and organyltellurolate anions generated by the insertions of selenium and tellurium in n -organyl lithium produced ( Z )-1,2-bis(organylchalcogene)-1-alkenes. The chemical

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c6718bcc91c8cbb827a14babbba6de9b
https://doi.org/10.1016/j.tetlet.2010.07.112

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Synthesis of naturally occurring diene and trienes by Te/Li exchange on (1Z,3Z)-butyltelluro-4-methoxy-1,3-butadiene

Autor: Adriano C. M. Baroni, Gabriela R. Hurtado, V B Dabdoub, Miguel J. Dabdoub, Sandro L. Barbosa

Publikováno v: Tetrahedron Letters. 51:1666-1670

(1 Z ,3 Z )-Butyltelluro-4-methoxy-1,3-butadiene 2 was obtained by the hydrotelluration of ( Z )-1-methoxy-but-1-en-3-ynes 1 . The butadienyllithium 3 obtained by the Te/Li exchange reaction in the (1 Z ,3 Z )-1-butyltelluro-4-methoxy-1,3-butadiene 2

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d312f1f83a7e65d6514b97f3fff56f13
https://doi.org/10.1016/j.tetlet.2010.01.066

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Synthesis of (Z)-1-Organylthiobut-1-en-3-ynes: Hydrothiolation of Symmetrical and Unsymmetrical Buta-1,3-diynes

Autor: Adriano C. M. Baroni, Amanda S. Santana, Gabriela R. Hurtado, Luiz Henrique Viana, Carlos Eduardo Domingues Nazario, Eder J. Lenardão, Vania B. Dabdoub, Sandro L. Barbosa, Palimécio G. Guerrero, Miguel J. Dabdoub

Publikováno v: Synlett. 2009:986-990

Hydrothiolation of 1-organylbuta-1,3-diynes and 1,4-di-organylbuta-1,3-diynes with the sodium organylthiolate anions,which were generated in situ by reacting diphenyl and dibutyl di-sulfide with NaBH 4 in ethanol, results in the regio-, stereo-, andc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f5a70d475768caddd02fbeb8c3ab9725
https://doi.org/10.1055/s-0028-1088196

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Desempenho dinâmico de um trator agrícola utilizando biodiesel destilado de óleo residual Dynamic performance of an agricultural tractor utilizing distilled biodiesel from spent oil

Autor: Ana M. Soranso, Antonio Gabriel Filho, Afonso Lopes, Eduardo G. de Souza, Miguel J. Dabdoub, Carlos E. A. Furlani, Felipe T. da Camara

Publikováno v: Revista Brasileira de Engenharia Agrícola e Ambiental-Agriambi, Vol 12, Iss 5, Pp 553-559 (2008)

Propôs-se, com este trabalho, avaliar o desempenho dinâmico de um trator agrícola funcionando com biodiesel destilado (50% etílico + 50% metílico) em função das proporções de biodiesel e diesel de petróleo (0 e 100%, 5 e 95%, 15 e 85%, 25 e

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doajarticles::26455ff4f634f73d5d81300cb5603e0e
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662008000500018

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