... The combined organic phases were washed sequentially with 4 L of 20% aqueous sodium thiosulfate and brine ... H1-NMR (DMSO-& , 200 MHz) 6 5.15 (t, J = 14.3, 2H); 7.65-8.00 (m, 4H ... on microfiche, immediately follows this article in the microfilm version of the journal, and can ...