SEARCH Articles Figures Tables Cycloaddition periselectivity Cycloadditions periselectivity Diels-Alder reactions periselectivity Effects of Solvent and Concentration on Periselectivity Ketenes periselectivity Periselectivity and Stereoselectivity Periselectivity control Periselectivity cycloaddition reactions Periselectivity cyclopentadiene Periselectivity reaction with fulvenes Periselectivity substituent effects Periselectivity synthesis Periselectivity tropones Periselectivity via Diels-Alder reactions Quantifying Periselectivity Through Ion Pair Association Substituent and Steric Effects on Periselectivity