Spectroscopic and theoretical studies of some 2‑(methoxy)‑2‑[(4‑substituted)‑phenylsulfanyl]‑(4′‑substituted) acetophenones
作者:Henrique J. Traesel、Paulo R. Olivato、Daniel N.S. Rodrigues、Jéssica Valença、Alessandro Rodrigues、Julio Zukerman-Schpector、Maurizio Dal Colle
DOI:10.1016/j.saa.2018.11.010
日期:2019.3
The conformational analysis of some 2‑(methoxy)‑2‑[(4‑substituted)‑phenylsulfanyl]‑(4′‑substituted) acetophenones was performed through infrared (IR) spectroscopic analysis of the carbonyl stretching band (νCO), supported by B3LYP/6-31+G(d,p) calculations and X-ray diffraction. Five (1–5) of the seven studied compounds (1–7) presented Fermi resonance (FR) on the νCO fundamental transition band. Deuteration
A series of a-methoxy-a-phenylthio substituted ketones bearing an additional stereocenter in a1-position was prepared, and the reduction with chelating and non chelating reagents was studied. ''Internal matched'' pairs (leading to highly stereoselective processes) and ''mismatched'' pairs were identified, and possible transition structures were suggested.
DUHAMEL, L.;CHAUVIN, J., TETRAHEDRON LETT., 1982, 23, N 16, 1665-1668