90328-98-6Relevant articles and documents
SELECTIVITY IN CYCLOADDITIONS-XII THE DIRECTIVE EFFECT OF ENOL ETHERS AND THIOENOL ETHERS IN CYCLOADDITIONS OF NITRILE OXIDES
Caramella, P.,Bandiera, T.,Gruenanger, P.,Albini, F. Marinone
, p. 441 - 453 (2007/10/02)
Cycloadditions of nitrile oxides to 2,3-dihydrofuran are highly regioselective whereas the regioselectivity of the cycloadditions to 2,3-dihydrothiophen is only moderate.The directing effect of oxygen and sulfur in these cycloadditions could be evaluated