Ring-opening reactions. 3. Mechanistic path vs. ring-strain control in elimination and substitution reactions of 1,1-dimethyl cyclic ammonium ions and their .alpha.,.alpha.'-dimethyl-substituted derivatives

1981 ◽  
Vol 46 (14) ◽  
pp. 2944-2947 ◽  
Author(s):  
Gabriella Cospito ◽  
Gabriello Illuminati ◽  
Claudio Lillocci ◽  
Horia Petride
Keyword(s):  
Ring Opening ◽  
Ammonium Ions ◽  
Substitution Reactions ◽  
Strain Control ◽  
Ring Strain ◽  
Ring Opening Reactions

Oxaphosphirane-Borane Complexes: Ring Strain and Migratory Insertion/Ring-Opening Reactions

2014 ◽  
Vol 53 (12) ◽  
pp. 6132-6140 ◽  
Author(s):  
Arturo Espinosa ◽  
Edgar de las Heras ◽  
Rainer Streubel
Keyword(s):  
Ring Opening ◽  
Ring Strain ◽  
Ring Opening Reactions ◽  
Migratory Insertion

Organophosphorus compounds. XXI. Solvolysis and C3-substitution reactions of some 2,3-Dihydro-1H-1,2-benzazaphosphole 2-oxides and 2-sulfides

1984 ◽  
Vol 37 (6) ◽  
pp. 1349 ◽  
Author(s):  
DJ Collins ◽  
PF Drygala ◽  
JM Swan
Keyword(s):  
Ring Opening ◽  
Organophosphorus Compounds ◽  
Substitution Reactions ◽  
Ring Opening Reactions ◽  
Benzylidene Derivative ◽  
Methyl Derivatives

The solvolysis in D2O/CD3SOCD3 of the 2-phenyl-2,3-dihydro-1H-1,2-benzazaphosphole 2-oxides (5a-c), the analogous 2-methyl derivatives (6a-c), and of the 2-methyl-2,3-dihydro-lH-1,2-benzaza-phosphole 2-sulfides (6d) and (6e) was examined semi-quantitatively by n.m.r. spectroscopy. 1-Methyl-2-phenyl-2,3-dihydro-1 H-1,2-benzazaphosphole 2-oxide (5b) was subjected to reductive ring-opening reactions, base-catalysed C3-alkylation, and base-catalysed formation of a 3-benzylidene derivative.

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
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