✍ Scribed by M. Eisenhut
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
4-alkylamino-iodoquinolines can be labeled as their phosphate salts in high yields and in a short period of time by nucleophilic exchange in a melt with radioactive iodide. The iodide must be free of NaCl and reducing agents.
## Abstract The ^18^F‐labelling of __o__‐fluorohippuric acid by isotope exchange reactions has been studied in several organic solvents under varying reaction conditions. The solvent mixture ethanol/water (1:1) was found suitable for the isotope exchange reaction: a 100 per cent isotope exchange wa
## Abstract Long chain ω‐^123^‐I‐labelled fatty acids such as 16‐I‐hexadecanoic‐, 17‐I‐heptadecanoic‐, and 16‐I‐hexadec‐9‐enoic acid have been prepared without adding carrier by nucleophilic ^123^I‐for‐Br exchange in acetone, in the melt, and by use of phase transfer catalysts in non‐polar solvents
## Abstract Sulbactam, a β‐lactamase inhibitor, has been prepared in tritiated (170 mCi mmol^−1^) form by the highly stereospecific isotope exchange procedure involving penicillanic acid (R)‐sulphoxide benzyl ester. The stereochemistry of the tritiation has been established by ^3^H n.m.r. in conjun
## Abstract Radioiodinated 5‐(1‐hydroxy‐2‐iodoethyl)‐2′‐deoxyuridine (1a) and 5‐(1‐methoxy‐2‐iodoethyl)‐2′‐deoxyuridine (2a) were prepared from the corresponding unlabelled nucleosides (1 and 2) by isotope exchange in a pivalic acid melt. Compound 1a was obtained in 71.3% to 26.3% radiochemical yie