Determination of the Effective Redox Potentials of SmI<sub>2</sub>, SmBr<sub>2</sub>, SmCl<sub>2</sub>, and their Complexes with Water by Reduction of Aromatic Hydrocarbons. Reduction of Anthracene and Stilbene by Samarium(II) Iodide–Water Complex
作者:Michal Szostak、Malcolm Spain、David J. Procter
DOI:10.1021/jo4028243
日期:2014.3.21
SmI2(H2O)n arising from the addition of large amounts of H2O (500 equiv) are much less reactive toward reduction of aromatichydrocarbons than complexes of SmI2(H2O)n prepared using 50 equiv of H2O. We also report that SmI2(H2O)n cleanly mediates Birch reductions of substrates bearing at least two aromatic rings in excellent yields, at room temperature, under very mild reaction conditions, and with selectivity
Purpose: To examine the inotropic and chronotropic effects of xenon (Xe) and nitrous oxide (N2O) compared with nitrogen (N-2) on isolated rat hearts. The differences between Xe and N2O were also compared.Methods: The effects of Xe, N2O and N-2 on coronary perfusion pressure (CPP), heart rate, left ventricular developed pressure (LVDP) and double product (DP) were examined in isolated rat hearts perfused at constant flow (10 mL.min(-1)). Following stabilization and baseline measurement with 95% O-2 (plus 5% CO2), the heart was exposed to buffer equilibrated with one of three test gases; 50% N-2 with 4596 O-2 (Group N-2: n=9),50% Xe with 45% O-2 (Group Xe: n=9), or 50% N2O with 45% O-2 (Group N2O: n=9) for 30 min. Measurements were performed in the last minute of exposure to the test gases.Results: Gas exposure in all three groups decreased O-2 delivery (-50%), CPP (-11%), LVDP (-30%) and DP (-44%) compared with baseline values (P < 0.001). However, there were no differences among the groups.Conclusion: Our data suggest that cardiac contractility was decreased by the effects of reduced O-2 delivery but both Xe and N2O did not cause further cardiac depressant effects compared to N-2 in this experimental model.
Efforts toward the synthesis of liphatic iodonium salts
作者:Joseph B. Dence、John D. Roberts
DOI:10.1021/jo01267a073
日期:1968.3
Rigaudy; Kha-Vang-Thang, Bulletin de la Societe Chimique de France, 1959, p. 1618,1619