Both the alpha-protons and carbons of beta-propiothiolactones exhibit atypical downfield chemical shifts. The alpha-protons of beta-propiothioiactones with no heteroatom at the alpha-position appear at 3.53-5.35 ppm, whereas the alpha-carbons appear at 56.9-86.2 ppm. The major cause of the unexpected deshielding effect was rationalized by assuming a through-space interaction between the occupied orbital of the alpha-carbon and the vacant orbital of sulfur, Copyright (C) 2000 John Wiley & Sons, Ltd.
Linkowa et al., Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1955, p. 569;engl.Ausg.S.507
作者:Linkowa et al.
DOI:——
日期:——
Lin'kowa et al., Doklady Akademii Nauk SSSR, 1959, vol. 127, p. 564