ChemInform Abstract: Lewis Acid Promoted [2 + 1] Cycloaddition Reactions of a 1-Seleno-2-silylethene to 2-Phosphonoacrylates: Stereoselective Synthesis of a Novel Functionalized α-Aminocyclopropanephosphonic Acid.

ChemInform ◽  
2010 ◽  
Vol 30 (3) ◽  
pp. no-no
Author(s):  
S. YAMAZAKI ◽  
T. TAKADA ◽  
T. IMANISHI ◽  
Y. MORIGUCHI ◽  
S. YAMABE
Keyword(s):  
Lewis Acid ◽  
Stereoselective Synthesis ◽  
Cycloaddition Reactions

scholarly journals Formal [3+2] Cycloaddition Reactions of Electron-Rich Aryl Epoxides with Alkenes under Lewis Acid Catalysis Affording Tetrasubstituted Tetrahydrofurans

Molecules ◽  
2020 ◽  
Vol 25 (3) ◽  
pp. 692
Author(s):  
Víctor E. Macías-Villamizar ◽  
Luís Cuca-Suárez ◽  
Santiago Rodríguez ◽  
Florenci V. González
Keyword(s):  
Chemical Reaction ◽  
Lewis Acid ◽  
Acid Catalysis ◽  
Stereoselective Synthesis ◽  
Cycloaddition Reaction ◽  
Cycloaddition Reactions ◽  
Lewis Acid Catalysis

We report on the regio- and stereoselective synthesis of tetrahydrofurans by reaction between epoxides and alkenes in the presence of a Lewis acid. This is an unprecedented formal [3+2] cycloaddition reaction between an epoxide and an alkene. The chemical reaction represents a very concise synthesis of tetrahydrofurans from accessible starting compounds.

Stereoselective Synthesis of C-Ketosides by Lewis Acid Catalyzed C-Glycosylation of Alkynyl-Ketoses.

ChemInform ◽  
2003 ◽  
Vol 34 (14) ◽  
Author(s):  
Ana M. Gomez ◽  
Clara Uriel ◽  
Serafin Valverde ◽  
Slawomir Jarosz ◽  
J. Cristobal Lopez
Keyword(s):  
Lewis Acid ◽  
Stereoselective Synthesis ◽  
Acid Catalyzed

Counterion effects in the catalytic stereoselective synthesis of 2,3′-pyrrolidinyl spirooxindoles

2014 ◽  
Vol 50 (40) ◽  
pp. 5242-5244 ◽  
Author(s):  
Jacob P. MacDonald ◽  
Benjamin H. Shupe ◽  
John D. Schreiber ◽  
Annaliese K. Franz
Keyword(s):  
Lewis Acid ◽  
Stereoselective Synthesis ◽  
Acid Catalyzed

A Lewis acid-catalyzed stereoselective [3+2] annulation of crotylsilanes with iminooxindoles is reported to access 2,3′-pyrrolidinyl spirooxindoles with four stereocenters.

A mechanistic MEDT study of the competitive catalysed [4+2] and [2+2] cycloaddition reactions between 1-methyl-1-phenylallene and methyl acrylate: the role of Lewis acid on the mechanism and selectivity

2018 ◽  
Vol 29 (6) ◽  
pp. 1709-1721 ◽  
Author(s):  
Leila Barama ◽  
Brahim Bayoud ◽  
Fouad Chafaa ◽  
Abdelmalek Khorief Nacereddine ◽  
Abdelhafid Djerourou
Keyword(s):  
Lewis Acid ◽  
Methyl Acrylate ◽  
Cycloaddition Reactions
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