Molecules, 2008 The novel 3H-spiro[1-benzofuran-2-cyclopentan]-3-one skeleton has been madeaccessible by different routes. One- and two-step protocols lead to tricyclic and tetracyclicbenzofuranones 2 and 3, respectively.
Gunter Fischer +4 more
doaj +1 more source
Palladium-Catalyzed [5 + 2] Rollover Annulation of 1-Benzylpyrazoles with Alkynes: A Direct Entry to Tricyclic 2-Benzazepines [PDF]
, 2023 The first Pd-catalyzed [5 + 2] rollover annulation of 1-benzylpyrazoles with alkynes to assemble 10H-benzo[e]pyrazolo[1,5-a]azepines (tricyclic 2-benzazepines) has been developed.
Martínez Yáñez, Nuria +4 more
core +1 more source
Synthesis of 6-Methoxy-1-oxaspiro[4,5]deca-6,9-diene-8-one
Molecules, 2002 The synthesis of a new spirolactone is described. The title compound is obtained as a white solid in 46% yield from 3-(4-hydroxy-2-methoxyphenyl)propanoic acid using [Bis(trifluoroacetoxy)iodo]benzene (PIFA) as the oxidant.
Benjamin B. Fisher, Guy L. Plourde
doaj +1 more source
Synthesis of Spirolactones Substituted at the Benzylic Position: Studies Toward the Formation of Manumycin Structural Analogs. [PDF]
, 2012 This study was designed to create a series of spirolactone compounds produced through an oxidative spiroannulation reaction, each with a different substituent at the benzylic position.
core +1 more source
Studies towards the diastereoselective formation of the manumycin m-C(7)N core. [PDF]
, 2007 No abstract available.The original print copy of this thesis may be available here: http://wizard.unbc.ca/record ...
core +1 more source
γ-Substituted Allenic Amides in the Phosphine-Catalyzed Enantioselective Higher Order Cycloaddition with Azaheptafulvenes [PDF]
, 2020 Racemic γ-substituted allenes undergo enantioselective higher order [8 + 2]-cycloaddition with azaheptafulvenes using a chiral amino acid derived amidophosphine as catalyst, providing the corresponding azaazulenoid cycloadducts with excellent levels of ...
Carrillo Fernández, María Luisa +7 more
core +1 more source
Enantioselective Intramolecular Aza-Spiroannulation onto Benzofurans Using Chiral Rhodium Catalysis
HETEROCYCLES, 2014 Yoshiharu Iwabuchi +6 more
openaire +2 more sources
NIS−PPh3: A Selective Reagent for the Spiroannulation of o‑Allyl Phenols. Total Synthesis of Corallidictyal D [PDF]
, 2013 Treatment of o-allyl phenols with catalytic NIS−PPh3 affords the corresponding spirodihydrobenzofuran derivatives in high yield with high regio- and total stereoselectivity under mild conditions.
Alvarez, Esteban +6 more
core +1 more source
6-Oxyindan-1-ones with amino acid fragments [PDF]
, 2018 New indan-1-one derivatives (8 examples) with amino acid fragments were synthesized through the N-acylation of the amino acids by 2-(3-oxo-2,3-dihydro-1H-inden-5-yloxy)acetic acid using the method of activated N-hydroxysuccinimide esters.
Khilya, Volodymyr +3 more
core +2 more sources
Palladium-Catalyzed Access to Benzocyclobutenone-Derived Ketonitrones via C(sp2)–H Functionalization [PDF]
, 2022 The palladium-catalyzed C(sp2)–H functionalization of bromoaryl aldonitrones leading to benzocyclobutenone-derived ketonitrones is described. This method allows for the preparation of a wide range of strained, four-membered ketonitrones with broad ...
Brześkiewicz, Jakub, Loska, Rafał
core +2 more sources