Three-Component Ring-Opening Reactions of Cyclic Ethers, α-Diazo Esters, and Weak Nucleophiles under Metal-Free Conditions

2018 ◽  
Vol 83 (23) ◽  
pp. 14385-14395 ◽  
Author(s):  
Lin Lu ◽  
Chuwei Chen ◽  
Huanfeng Jiang ◽  
Biaolin Yin
Keyword(s):  
Ring Opening ◽  
Cyclic Ethers ◽  
Metal Free ◽  
Ring Opening Reactions ◽  
Diazo Esters

scholarly journals Mild and selective silicon-mediated access to enantioenriched 1,2-mercaptoamines and β-amino arylchalcogenides

2019 ◽  
Vol 43 (16) ◽  
pp. 6388-6393 ◽  
Author(s):  
Damiano Tanini ◽  
Cosimo Borgogni ◽  
Antonella Capperucci
Keyword(s):  
Ring Opening ◽  
Free Ring ◽  
Metal Free ◽  
Ring Opening Reactions

Metal-free ring opening reactions of activated and unactivated aziridines with different silyl chalcogenides are described.

Ring-opening reactions of cyclic ethers with diiodo- and dibromodimethylsilane equivalents

2006 ◽  
Vol 691 (9) ◽  
pp. 1907-1911 ◽  
Author(s):  
Joji Ohshita ◽  
Yuki Izumi ◽  
Zhou Lu ◽  
Junnai Ikadai ◽  
Atsutaka Kunai
Keyword(s):  
Ring Opening ◽  
Cyclic Ethers ◽  
Ring Opening Reactions

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.

ChemInform Abstract: Ring-Opening Reactions of Difluoro(methylene)cyclopropanes with Halogens and Amines.

ChemInform ◽  
2009 ◽  
Vol 40 (12) ◽  
Author(s):  
Xiao-Chun Hang ◽  
Qing-Yun Chen ◽  
Ji-Chang Xiao
Keyword(s):  
Ring Opening ◽  
Ring Opening Reactions

Substituent Effects in Mechanochemical Allowed and Forbidden Cyclobutene Ring-Opening Reactions

2021 ◽  
Author(s):  
Cameron L. Brown ◽  
Brandon H. Bowser ◽  
Jan Meisner ◽  
Tatiana B. Kouznetsova ◽  
Stefan Seritan ◽  
...  
Keyword(s):  
Ring Opening ◽  
Substituent Effects ◽  
Ring Opening Reactions

ChemInform Abstract: Discovery of μ-Opioid Selective Ligands Derived from 1-Aminotetralin Scaffolds Made via Metal-Catalyzed Ring-Opening Reactions.

ChemInform ◽  
2009 ◽  
Vol 40 (29) ◽  
Author(s):  
Chris Dockendorff ◽  
Shujuan Jin ◽  
Madeline Olsen ◽  
Mark Lautens ◽  
Martin Coupal ◽  
...  
Keyword(s):  
Ring Opening ◽  
Ring Opening Reactions ◽  
Selective Ligands ◽  
Metal Catalyzed

scholarly journals Stereoselective Synthesis of Tetraalkyl Cyclobutene-1,2,3,4-tetracarboxylates. Synthesis of Tetraalkyl (Z,Z)-Buta-1,3-diene-1,2,3,4-tetracarboxylates

1999 ◽  
Vol 23 (8) ◽  
pp. 512-513
Author(s):  
Issa Yavari ◽  
Farahnaz Nourmohammadian
Keyword(s):  
Ring Opening ◽  
Wittig Reaction ◽  
Stereoselective Synthesis ◽  
Intramolecular Wittig Reaction ◽  
Ring Opening Reactions ◽  
Boiling Toluene

Tetraalkyl cyclobutene-1,2,3,4-tetracarboxylates, prepared by intramolecular Wittig reaction between a vinylphosphonium salt and diethyl 2-oxobutanedioate, undergo electrocyclic ring-opening reactions, in boiling toluene, to produce highly electron-deficient 1,3-dienes.

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