Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Helio T. Prates"'
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 97:199-207
A new improved synthesis of 3-benzylidenecamphor (1) is described; the procedure has also been applied to the conversion of isopinocamphorone (4) into 4-benzylidenepinocamphorone (6a). In the latter reaction, 1H NMR spectral data and X-ray crystallog
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8973327edfbcb3205a251e1427d62dde
https://doi.org/10.1080/10426509408020743
https://doi.org/10.1080/10426509408020743
Autor:
Helio T. Prates, Richard J. Cremlyn
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 79:257-271
The preparation of 3-(arylidene) camphors (3-8) from benzaldehyde, o-, m-and p-anisaldehyde, p-nitrobenzaldehyde and thiophen-2-carboxaldehyde is discussed. The arylidenes (3–6, 8) reacted with chlorosulfonic acid-thionyl chloride to give the sulfo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12a9c00a9825acca34941ab46da6e8d1
https://doi.org/10.1080/10426509308034417
https://doi.org/10.1080/10426509308034417
Autor:
Richard J. Cremlyn, Helio T. Prates
Publikováno v:
ChemInform. 24
The preparation of 3-(arylidene) camphors (3-8) from benzaldehyde, o-, m-and p-anisaldehyde, p-nitrobenzaldehyde and thiophen-2-carboxaldehyde is discussed. The arylidenes (3–6, 8) reacted with chlorosulfonic acid-thionyl chloride to give the sulfo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc16784ab4b0681bef950f7a9f74fb2f
https://doi.org/10.1002/chin.199345126
https://doi.org/10.1002/chin.199345126
Autor:
PAULO A. VIANA, HÉLIO T. PRATES
Publikováno v:
Revista Brasileira de Milho e Sorgo, Vol 4, Iss 3, Pp 316-322 (2005)
The objective of this study was to evaluate the effect of the feeding period on the mortality of Spodoptera frugiperda larvae, of different ages, fed with corn leaves treated with aqueous extracts from neem leaves. Two bioassays were carried out at E
Externí odkaz:
https://doaj.org/article/6905056aad794d0e9e6dd03de1bd720c
Autor:
Adailson P. de Souza, Francisco A. Ferreira, Antônio A. da Silva, Hugo A. Ruiz, Hélio T. Prates
Publikováno v:
Planta Daninha, Vol 18, Iss 1, Pp 5-16 (2000)
A mobilidade dos herbicidas no perfil do solo é influenciada por vários processos, tais como, retenção, transformação e transporte. O conhecimento destes fenômenos é fundamental para a perfeita compreensão do destino de tais produtos no ambi
Externí odkaz:
https://doaj.org/article/b05a6be95f9e4d0aa7cd46e8d8103701
Autor:
Adailson P. de Souza, Hélio T. Prates, Francisco A. Ferreira, Efraim L. Reis, Claudio P. Jordão
Publikováno v:
Planta Daninha, Vol 17, Iss 2, Pp 245-262 (1999)
Em razão das poucas de informações existente na literatura, sobre a mobilidade do glyphosate e do imazapyr, em solos de baixa atividade, comum em países tropicais, foi conduzido, em laboratório, um estudo sobre a mobilidade vertical desses herbi
Externí odkaz:
https://doaj.org/article/746d029c2b0543e1a8a984aad5196120
Publikováno v:
Planta Daninha, Vol 15, Iss 2, Pp 180-189 (1997)
Carryove reffects of fomesafen on successional maize were studied in clay soil. Fomesafen was applied as postemergence at Five rate s (0; 0.12 5: 0.25 ; 0.37 5, and 0.5 kg/ha-1) to edible beans. Maize was planted 198 and 65 days after fomesafen appli
Externí odkaz:
https://doaj.org/article/f71b48e5f9ca45ceaba2daec167a3324