Results 81 to 90 of about 276 (104)

A Synthesis of Substituted 3,6‐Dihydro‐1H‐benzo[c]oxocines via Claisen Rearrangement and Ring‐Closing Metathesis.

ChemInform, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Eng‐Chi Wang, Chin‐Cheng Wang, Ming‐Kun Hsu, Keng‐Shiang Huang   +3 more
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ChemInform Abstract: Novel Synthesis of Oxocine Derivatives by Wittig Olefination and Intramolecular Heck Reaction via 8‐endo trig Cyclization.

ChemInform, 2008
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
K. C. Majumdar, B. Chattopadhyay, B. Sinha   +2 more
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ChemInform Abstract: EINFACHE SYNTH. DES NAPHTH(2,1‐B)OXEPIN‐ UND DES NAPHTH(2,1‐B)OXOCIN‐SYST.

Chemischer Informationsdienst. Organische Chemie, 1970
AbstractIn Gegenwart von sauren Katalysatoren (HCl in Eisessig) erhält man bei der Reaktion zwischen β‐Naphthol (I) und dem 2,5‐Dimethoxy‐tetrahydrofuran (II) bzw. dem 2‐Äthoxy‐2,3‐dihydro‐4H‐pyran (III) über kationische Zwischenstufen die beiden tetracyclischen Kondensate (IVa) und (IVb), die z.B.
J. JONAS, T. P. FORREST
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Visible-Light-Induced [4 + 3]-Annulation of Carbonyl Ylides with Alkenyl Pyrazolinone for Constructing [4.2.1]-Oxo-Bridged Oxocine Skeleton

Organic Letters
Herein, we present a visible-light-induced protocol for the synthesis of highly functionalized oxo-bridged oxocine skeletons. This method generates carbenes via visible-light-induced ortho-acyl diazo compounds, which are rapidly intercepted by the oxygen atom of an intermolecular acyl group to form a cyclic 1,3-dipole.
Dong-Sheng Ji, Xin Zhang, Peiqin Zhang, Xiazhen Bao, Yong Yuan, Congde Huo, Peng-Fei Xu   +6 more
openaire   +2 more sources

A New Synthesis of Methyl 7H-Dibenz[b,g]oxocin-6-carboxylates from Morita-Baylis-Hillman Adducts of 2-Phenoxybenzaldehydes

Synthesis, 2011
A new synthetic method for methyl 7 H-dibenz[ B, G]oxocin-6-carboxylatesby Friedel-Crafts reaction of readily available bromidesof Morita-Baylis-Hillman adducts with aluminumchloride has been developed.
Kee-Jung Lee, Sang-Hyun Ahn, Seung Jang, Eun-Gu Han   +3 more
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Synthesis of 2,5-dihydrobenzo[b]oxepines and 5,6-dihydro-2H-benzo[b]oxocines based on a ‘[3+3] cyclization-olefin-metathesis’ strategy

Tetrahedron Letters, 2006
Abstract Functionalized 2,5-dihydrobenzo[ b ]oxepines and 5,6-dihydro-2 H -benzo[ b ]oxocines were prepared based on a ‘[3+3] cyclization-olefin-metathesis’ strategy.
Van Thi Hong Nguyen, Esen Bellur, Peter Langer   +2 more
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Regioselective access of alkylidendibenzo[c,f]oxocine framework via cyclocarbopalladation/cross-coupling cascade reactions and reductive Heck strategy

New Journal of Chemistry, 2017
Palladium-catalyzed dual strategies of cascade cyclocarbopalladation/cross-coupling of alkynes and a reductive Heck reaction have been developed to construct dibenzo[ c , f ]oxocine frameworks with tri- and tetra-substituted exo
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Synthesis of the dibenzo[b,g]oxocin system

The Journal of Organic Chemistry, 1969
Robert Shapiro, David Slobodin
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Synthesis of oxocines from hydroxy compounds

2023
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Synthesis of diazocines and oxocines by cyclization of dienes

2023
openaire   +1 more source