2039-77-2Relevant articles and documents
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Bachmann,Struve
, (1940)
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Concise Synthesis of Polysubstituted Carbohelicenes by a C?H Activation/Radical Reaction/C?H Activation Sequence
Yin, Jiangliang,You, Jingsong
, p. 302 - 306 (2019)
Disclosed herein is the merging of C?H activation and radical chemistry, enabling rapid access to a structurally diverse family of fused carbohelicenes through the fusion of α-acetylnaphthalenes with alkynes under oxidative conditions. This cascade process exhibits exquisite chemoselectivity and regioselectivity. The reaction pathway was analyzed by intermediate separations, control experiments, radical trapping, EPR, MALDI-TOF-MS, and ESI-HRMS experiments, and shown to involve a C2?H activation/radical reaction/C8?H activation relay.
Hydration of aromatic alkynes catalyzed by a self-assembled hexameric organic capsule
La Sorella, Giorgio,Sperni, Laura,Ballester, Pablo,Strukul, Giorgio,Scarso, Alessandro
, p. 6031 - 6036 (2016/08/05)
The combination of a Br?nsted acid catalyst and a supramolecular organic capsule formed by the self-assembly of six resorcin[4]arene units efficiently promotes the mild hydration of aromatic alkynes to their corresponding ketones. The capsule provides a suitable nanoenvironment that favors protonation of the substrate and addition of water.
Direct one-pot synthesis of phenanthrenes via Suzuki-Miyaura coupling/aldol condensation cascade reaction
Young, Ha Kim,Lee, Hyuk,Yeong, Joon Kim,Bum, Tae Kim,Heo, Jung-Nyoung
, p. 495 - 501 (2008/09/17)
(Chemical Equation Presented) We have developed an efficient cascade reaction, a Suzuki-Miyaura coupling followed by an aldol condensation, for the construction of phenanthrene derivatives using microwave irradiation. For example, the reaction of methyl 2-bromophenylacetamide with 2- formylphenylboronic acid in the presence of a palladium catalyst and a base provided a biaryl intermediate, which underwent in situ cyclization to afford the corresponding phenanthrene in high yield.