Banca de QUALIFICAÇÃO: ALEXANDRE DAMIANI

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
DISCENTE : ALEXANDRE DAMIANI
DATA : 07/08/2019
HORA: 09:00
LOCAL: sala 301, 3º andar, Bloco B, Campus SA da Fundação Universidade Federal do ABC, localizada na Avenida dos Estados, 5001, Santa Terezinha, Santo André, SP
TÍTULO:

Metathesis of natural products Using Ru-catalysts: surprisingly high selectivity in the reaction of pseudoionone

PÁGINAS: 20
GRANDE ÁREA: Ciências Exatas e da Terra
ÁREA: Química
SUBÁREA: Físico-Química
ESPECIALIDADE: Cinética Química e Catálise
RESUMO:

Metathesis of pseudoionone using Grubbs II and Grubbs Hoveyda II was studied. Reactions was very fast at 110°C (nearly 3 min), with a conversion as high as 90%. Products from self-metathesis and ring-closing metathesis were observed. In spite of the high number of double bonds and isomers (E,Z), a surprisingly high selectivity were observed. With a more diluted reaction, exclusively products of ring-closing metathesis were observed, mesityl oxide (MO) and 1-methyl-cyclohexa-1,3-diene (CHD), with a conversion of 77% and a ratio MO : CHD = 1.5. Using higher concentrations of pseudoionone (favoring self-metathesis), five main products were observed, four products of metathesis and one of isomerization, including alkenes (diene and triene) and unsaturated ketone, mainly because the primary products react very selectively to mainly forming mesityl oxide (MO).

MEMBROS DA BANCA:
Presidente - Interno ao Programa - 1762430 - DALMO MANDELLI
Membro Titular - Examinador(a) Interno ao Programa - 1623562 - RODRIGO LUIZ OLIVEIRA RODRIGUES CUNHA
Membro Titular - Examinador(a) Externo à Instituição - TIMOTHY JOHN BROCKSOM
Membro Suplente - Examinador(a) Interno ao Programa - 1766090 - MIRELA INES DE SAIRRE