Silver-catalyzed formal [3+2]-cycloaddition of α-trifluoromethylated methyl isocyanides: a facile stereoselective synthesis of CF3-substituted heterocycles

2017 ◽  
Vol 53 (16) ◽  
pp. 2427-2430 ◽  
Author(s):  
Xue Zhang ◽  
Xin Wang ◽  
Yuelei Gao ◽  
Xianxiu Xu
Keyword(s):  
Stereoselective Synthesis ◽  
Double Bonds ◽  
Mild Conditions

An Ag-catalyzed formal [3+2]-cycloaddition of α-trifluoromethylated methyl isocyanides with polar double bonds has been developed for the expeditious synthesis of trifluoromethylated oxazolines, imidazolines and pyrrolines under mild conditions.

Stereoselective Synthesis 1 Stereoselective Reactions of Carbon—Carbon Double Bonds

2011 ◽  
Author(s):  
J. G. de Vries ◽  
K. Muñiz ◽  
G. Franciò ◽  
W. Leitner ◽  
P. L. Alsters ◽  
...  
Keyword(s):  
Stereoselective Synthesis ◽  
Double Bonds ◽  
Stereoselective Reactions

Stereoselective Synthesis of Insect Sex Pheromone Analogues Having a Fluorine Atom on Their Double Bonds.

ChemInform ◽  
2005 ◽  
Vol 36 (50) ◽  
Author(s):  
Tong Guan ◽  
Masanori Yoshida ◽  
Daisuke Ota ◽  
Tsuyoshi Fukuhara ◽  
Shoji Hara
Keyword(s):  
Sex Pheromone ◽  
Fluorine Atom ◽  
Stereoselective Synthesis ◽  
Double Bonds ◽  
Insect Sex Pheromone ◽  
Insect Sex

Übergangsmetall-Methylen-Komplexe, LI [1]. Carbocyclische Carbene, Carben-Brücken, kleine Kohlenwasserstoff-Liganden und Metallacyclen: Beispiele einer umfassenden Synthesekonzeption / Transition Metal Methylene Complexes, LI [1]. Carbocyclic Carbenes, Carbene Bridges, Small Hydrocarbon Ligands, and Metallacycles: Examples of a General Synthetic Concept

1983 ◽  
Vol 38 (11) ◽  
pp. 1392-1398 ◽  
Author(s):  
Wolfgang A. Herrmann ◽  
Johann Plank ◽  
John L. Hubbard ◽  
Gangolf W. Kriechbaum ◽  
Willibald Kalcher ◽  
...  
Keyword(s):  
Transition Metal ◽  
Double Bonds ◽  
General Applicability ◽  
Bridging Ligands ◽  
Metal Centers ◽  
Mild Conditions ◽  
Metal Metal ◽  
Hydrocarbon Chemistry ◽  
Rearrangement Processes ◽  
Single Bonds

Abstract Carbene transfer from aliphatic diazoalkanes upon coordinatively unsaturated metal centers is a general synthetic concept that provides straight-forward routes into organo-metallic hydrocarbon chemistry. A comparison focussing on several key reactions of general applicability demonstrates that mononuclear organometal substrates add carbenes that may act as bridging ligands (e.g., compound 6) if they arise from ω,ω'-bisdiazoalkanes. By way of contrast, metal-metal double bonds cleanly form dimetallacyclo-propane-type derivatives under very mild conditions (7-9). The broadest variety of structures is finally encountered with metal-metal triply bonded precursors such as the molybdenum compounds 3: here, the initial diazoalkane adducts are subject to further rearrangement processes commonly leading to metal-metal single bonds (11) or causing irreversible cleavage of the dinuclear metal systems (10).

ChemInform Abstract: Stereoselective Synthesis of Pseudoglycosides Catalyzed by TeCl4under Mild Conditions.

ChemInform ◽  
2013 ◽  
Vol 44 (20) ◽  
pp. no-no
Author(s):  
Juliano C. R. Freitas ◽  
Tulio R. Couto ◽  
Antonio A. S. Paulino ◽  
Joao R. de Freitas Filho ◽  
Ivani Malvestiti ◽  
...  
Keyword(s):  
Stereoselective Synthesis ◽  
Mild Conditions

Stereoselective Synthesis of (E)-Cinnamonitriles with the Sml2/THF/MeOH System

1999 ◽  
Vol 23 (5) ◽  
pp. 342-343
Author(s):  
Hongyun Guo ◽  
Yongmin Zhang
Keyword(s):  
Stereoselective Synthesis ◽  
Mild Conditions

α-Phenylsulfonylcinnamonitriles are readily reduced by Sml2/THF/MeOH to give the corresponding ( E)-cinnamonitriles in good yields under mild conditions.

Stereospecific Cyclopropanation of Highly Substituted C−C Double Bonds Promoted by CrCl2. Stereoselective Synthesis of Cyclopropanecarboxamides and Cyclopropyl Ketones

2007 ◽  
Vol 9 (16) ◽  
pp. 2981-2984 ◽  
Author(s):  
José M. Concellón ◽  
Humberto Rodríguez-Solla ◽  
Carmen Méjica ◽  
Elena G. Blanco
Keyword(s):  
Stereoselective Synthesis ◽  
Double Bonds ◽  
Cyclopropyl Ketones
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