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Orientador(es)
Resumo(s)
A large variety of publications involving O- and S-6-membered ring systems have
appeared in 2018. The importance of these heterocyclic compounds is highlighted
by the large number of publications on the total synthesis of natural oxygen derivatives
and of other communications dedicated to natural and synthetic derivatives.
Reviews on the ruthenium-catalyzed synthesis of various O-6-membered heterocycles
(18SC1551), the enantioselective syntheses of 3,4-dihydropyran derivatives
(18CR2080), and strategies for the synthesis of coumarins (18SC1534) have appeared.
The synthesis of natural pyran-2-ones and pyran-4-ones starting from alkynes and promoted
by gold complexes (18AGE4215) and cyclization strategies of substituted
alkynyl acids and esters to afford pyran-2-one and isocoumarin derivatives (18SL1)
have been detailed in minireviews. The synthesis of various O-6-membered derivatives
was also achieved through ultrasound irradiation (18SC1235) and using
4-hydroxy-6-methylpyran-2-one as a building block in multicomponent reactions
(18H(96)381).
Descrição
Palavras-chave
(Thio)Pyrans Benzopyran derivatives Chromones Coumarins Dioxanes Dithiins
Contexto Educativo
Citação
Santos, Clementina; Silva, Artur (2017). Six-membered ring systems: with O and/or S atoms. In Progress in Heterocyclic Chemistry. Amsterdam: Elsevier, Vol. 31, Chapter 6.4, p. p. 533- 595. ISBN 978-0-12-819962-6
Editora
Elsevier