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Arilsulfonilação tri componente de diidrofurano e ésteres vinílicos via catálise dual níquel/fotorredox
(Universidade Federal de São Carlos, 2022-03-29)
The pursuit of synthetic protocols aligned to sustainability goals, increasingly necessary in the global context in which we operate, caused a great effort by synthetic chemists to develop photocatalytic methodologies ...
Estudos sobre a síntese de derivados do tipo benzoclorinas
(Universidade Federal de São Carlos, 2016-02-18)
Herein, studies about the synthesis of new benzochlorin derivatives
were carried out aiming at the preparation of compounds with special
photophysical properties, such absorption bands between the visible and
near ...
Estudo químico do fungo Memnoniella levispora : busca por metabólitos secundários inibidores da Phytophtora nicotianae
(Universidade Federal de São Carlos, 2015-03-19)
Among the various diseases which attack citrus worldwide, the gummosis is caused by species of the genus Phytophthora. The various species
present in the literature, the most severe in Brazil is P. nicotianae. This pathogen ...
Técnicas de bioinformática aplicadas ao estudo de poligalacturonases de fungos
(Universidade Federal de São Carlos, 2012-04-18)
Plant cell walls are composed of approximately 65% cellulose microfibrils and pectin. The latter is proteolytically degraded by the so-called pectinases enzymes (also known as pectinolytic enzymes). Pectinases may be either ...
Metátese de fechamento de anéis de derivados da R-(-)- Carvona
(Universidade Federal de São Carlos, 2012-03-21)
In this work was developed a new synthetic route to obtain cicloeptenone not conjugated selectively, through a faster and simpler methodology, and in accordance with good practices of green chemistry. By experimental ...
Investigação do efeito alelopático dos extratos da aroeira-preta Myracrodruon urundeuva Freire Allemão no desenvolvimento das sementes das braquiárias Urochloa decumbens Stapf e Urochloa brizantha (Hochst. ex A. Rich) Stapf
(Universidade Federal de São Carlos, 2021-12-20)
Brachiaria grasses have great importance in the livestock sector, however, these grasses are considered weeds that affect negatively the productivity of many crops. Field observations indicate that Myracrodruon urundeuva ...
Multicomponent approach to silica-grafted peptide catalysts : A 3 D continuous-flow organocatalytic system with on-line monitoring of conversion and stereo-selectivity
(Universidade Federal de São Carlos, 2014-11-28)
The derivatization of organocatalysts with functional appendages suitable to anchor onto solid supports is usually achieved by stepwise syntheses. As an alternative to such a strategy, this work describes a one-pot approach ...
Tris(trimethylsilyl)silane and visible-light irradiation : a new metal- and additive-free photochemical process for the synthesis of indoles and oxindoles
(Universidade Federal de São Carlos, 2016-07-29)
A combined tris(trimethylsilyl)silane and visible-light-promoted intramolecular reductive cyclization protocol for the synthesis of indoles and oxindoles has been developed (Scheme 1).1 This straightforward and efficient ...
Metátese de fechamento de anel: espiro-anelação estereosseletiva / Reações multicomponentes de Diels-Alder na síntese de compostos tricíclicos
(Universidade Federal de São Carlos, 2011-02-22)
In this work, a study of different synthetic ways was made in order to obtain spiro compounds starting from R-(-)-carvone, getting to the formation of cycloheptenone as an intermediate, which undergoes two consecutives ...
Análise dos constituintes fixos e voláteis de fungos endofíticos dos gêneros Penicillium e Xylaria e de suas plantas hospedeiras
(Universidade Federal de São Carlos, 2010-10-08)
Was conducted the study of chemical constituents volatiles and fixed of endophytes fungi. For this, we used the Penicillium griseoroseum, Penicillium brasilianum, Xylaria (NICL3) and different species of the genus Trichoderma, ...