Lewis Acid Mediated Reductive Ring Opening of 2-Methoxyethylidene Acetals: A New Approach to 2-Methoxyethyl (MOE) Ethers ofcis-Diols

Synlett ◽  
2005 ◽  
pp. 2437-2440 ◽  
Author(s):  
Stephen Hanessian ◽  
Roger Machaalani
Keyword(s):  
Lewis Acid ◽  
Ring Opening ◽  
New Approach

Furan Ring Opening—Isochromene Ring Closure: A New Approach to Isochromene Ring Synthesis.

ChemInform ◽  
2006 ◽  
Vol 37 (11) ◽  
Author(s):  
Alexander V. Butin ◽  
Valdimir T. Abaev ◽  
Vladimir V. Mel'chin ◽  
Artem S. Dmitriev
Keyword(s):  
Ring Opening ◽  
Furan Ring ◽  
Ring Closure ◽  
New Approach ◽  
Ring Synthesis

scholarly journals Imidazolinium and amidinium salts as Lewis acid organocatalysts

2012 ◽  
Vol 8 ◽  
pp. 1798-1803 ◽  
Author(s):  
Oksana Sereda ◽  
Nicole Clemens ◽  
Tatjana Heckel ◽  
René Wilhelm
Keyword(s):  
Lewis Acid ◽  
Ring Opening ◽  
Alder Reaction ◽  
Diels Alder ◽  
Diels Alder Reaction

The application of imidazolinium and amidinium salts as soft Lewis acid organocatalysts is described. These salts were suitable catalysts for the activation of unsaturated thioesters in a Diels–Alder reaction and in the ring opening of thiiranes and epoxides. The products were isolated in good yields. The mild catalysts did not cause desulfurization of the products containing a thiol or thiocarbonyl group.

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