Photooxidation of Iodine Catalyzed by Uranyl Nitrate

Photooxidation of cellulose acetate and cellobiose by the uranyl ion.

The photooxidation of cellulose acetate by uranyl nitrate in acetone solutions has been investigated. Studies of the effect of the polymer on the uranyl luminescence showed an initial increase in intensity, followed by quenching. This is interpreted in terms of competition between complexation of uranyl ions by the polymer and dynamic quenching. In the quenching region, Stern-Volmer kinetics ar...

The Uranyl Nitrate - Water System Above 60 °

Iodine-catalyzed etherification of morroniside.

In this study, we describe a highly selective etherification procedure of unprotected morroniside catalyzed by molecular iodine in acetone. The etherification reaction furnished 7-O-alkyl ether derivatives in reasonable yields within few hours under neutral conditions. Studies of the obtained products on cytotoxicity activity in colon 26-L5 cell line were examined. Among the tested compounds, 7...

The Mechanism of Acute Renal Failure after Uranyl Nitrate ROLAND

Portions of this work were presented at the Annual Meeting of The American Federation for Clinical Research, Atlantic City, N. J., 5 May 1974. Received for publication 21 June 1974 and in revised form 18 November 1974. dose UN (0.047±0.013) and high dose (0.024±0.003 nVs/g kidney wt/mm Hg). Therefore UN decreases GFR by two mechanisms: (a) tubular damage leading to back-diffusion of solutes and...

Uranyl nitrate inhibition of transport systems in Saccharomyces cerevisiae.

Uranyl nitrate inhibited the transport of several amino acids, a vitamin, and a disaccharide into yeast.