Transition‐metal‐free ring‐opening reaction of 2‐halocyclobutanols via ring contraction

2021 ◽  
Author(s):  
Petr Oeser ◽  
Tereza Edlová ◽  
Marek Čubiňák ◽  
Tomáš Tobrman
Keyword(s):  
Transition Metal ◽  
Ring Opening ◽  
Free Ring ◽  
Ring Contraction ◽  
Metal Free ◽  
Ring Opening Reaction

Direct Synthesis of Nitrones via Transition-Metal-Free Ring-Opening of N-Tosylaziridines with the Nitrogen Atom of Various (E)-Aldoximes and (E)-Ketoximes

Synthesis ◽  
2019 ◽  
Vol 51 (21) ◽  
pp. 4043-4057
Author(s):  
Xing Li ◽  
Wenjing Yan ◽  
Rui Zhang ◽  
Honghong Chang ◽  
Wenchao Gao ◽  
...  
Keyword(s):  
Nitrogen Atom ◽  
Transition Metal ◽  
Oxygen Atom ◽  
Ring Opening ◽  
Direct Synthesis ◽  
Reaction Conditions ◽  
Free Ring ◽  
Metal Free ◽  
Ring Opening Reaction ◽  
Ring Opening Reactions

The KOH-, K2CO3-, or Et3N-catalyzed ring-opening reaction of N-tosylaziridines using the nitrogen atom of a series of (E)-aldoximes and (E)-ketoximes as a nucleophilic atom instead of an oxygen atom was developed to construct various nitrones under mild reaction conditions. Diverse (E)-aldoximes and (E)-ketoximes were demonstrated to be compatible with this reaction and the products of O-ring-opening reactions were not detected for most examples.

Transition-Metal-Free Ring-Opening Silylation of Indoles and Benzofurans with (Diphenyl-tert -butylsilyl)lithium

2017 ◽  
Vol 56 (44) ◽  
pp. 13872-13875 ◽  
Author(s):  
Pan Xu ◽  
Ernst-Ulrich Würthwein ◽  
Constantin G. Daniliuc ◽  
Armido Studer
Keyword(s):  
Transition Metal ◽  
Ring Opening ◽  
Free Ring ◽  
Metal Free

scholarly journals Phosphetes via transition metal free ring closure – taking the proper turn at a thermodynamic crossing

2021 ◽  
Author(s):  
Rudolf Pietschnig ◽  
Fabian Roesler ◽  
Máté Kovács ◽  
Clemens Bruhn ◽  
Zsolt Kelemen
Keyword(s):  
Transition Metal ◽  
Ring Closure ◽  
Free Ring ◽  
Metal Free

scholarly journals Phosphetes via Transition Metal Free Ring Closure – Taking the Proper Turn at a Thermodynamic Crossing

2021 ◽  
Author(s):  
Fabian Roesler ◽  
Máté Kovács ◽  
Clemens Bruhn ◽  
Zsolt Kelemen ◽  
Rudolf Pietschnig
Keyword(s):  
Transition Metal ◽  
Ring Closure ◽  
Free Ring ◽  
Metal Free

scholarly journals Metal-Free Ring-Opening Metathesis Polymerization

2015 ◽  
Vol 137 (4) ◽  
pp. 1400-1403 ◽  
Author(s):  
Kelli A. Ogawa ◽  
Adam E. Goetz ◽  
Andrew J. Boydston
Keyword(s):  
Ring Opening ◽  
Ring Opening Metathesis Polymerization ◽  
Free Ring ◽  
Metathesis Polymerization ◽  
Metal Free

Transition-metal free reactions of boronic acids: cascade addition – ring-opening of furans towards functionalized γ-ketoaldehydes

2016 ◽  
Vol 52 (14) ◽  
pp. 3018-3021 ◽  
Author(s):  
S. Roscales ◽  
A. G. Csákÿ
Keyword(s):  
Transition Metal ◽  
Ring Opening ◽  
Boronic Acids ◽  
Metal Free

We describe the first ring-opening of furfuryl alcohols with boronic acids to afford functionalized γ-ketoaldehydes.

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