Min, Sun-Joon Jones, Gavin O. Houk, K. N. Danishefsky, Samuel J. 2024-01-21T00:33:50Z 2024-01-21T00:33:50Z 2021-08-31 2007-08-22 0002-7863 https://pubs.kist.re.kr/handle/201004/134189 Ethynyl substituents were used to direct a highly exoselective creation of quaternary carbon centers in Diels-Alder cycloaddition reactions involving activated alpha-alkynyl dienophiles. The origins of electronic activation and the high stereoselectivities of these reactions were investigated by the B3LYP density functional method. English AMER CHEMICAL SOC DIELS-ALDER REACTIONS SECONDARY ORBITAL INTERACTIONS VIBRATIONAL ABSORPTION STEREOGENIC CENTERS PAECILOMYCINE-A ACIDITY TRENDS DENSITY STEREOCENTERS Creating quaternary centers with high exo stereoselectivity using activated alpha-alkynyl dienophiles Article 10.1021/ja073528d 1 JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.129, no.33, pp.10078 - + JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 129 33 10078 + scie scopus 000248896400017 Chemistry, Multidisciplinary Chemistry Article DIELS-ALDER REACTIONS SECONDARY ORBITAL INTERACTIONS VIBRATIONAL ABSORPTION STEREOGENIC CENTERS PAECILOMYCINE-A ACIDITY TRENDS DENSITY STEREOCENTERS