Synthesis of a phenolic precursor and its efficientO-[18F]fluoroethylation with purified no-carrier-added [18F]2-fluoroethyl brosylate as the labeling agent
Synthesis of a phenolic precursor and its efficientO-[18F]fluoroethylation with purified no-carrier-added [18F]2-fluoroethyl brosylate as the labeling agent
作者:I. Kapovits、J. Rábai、F. Ruff、Á. Kucsman、B. Tanács
DOI:10.1016/0040-4020(79)80013-7
日期:1979.1
The preparations of spirocyclic sulfuranes from bis(2-carboxyaryl) sulfoxides with dehydrating agents were investigated. Depending on the manner of dehydration, spirosulfurane formation follows different courses established by using 18O-labelled 2,2'-sulfinyldibenzoic acid. Sulfoxides with 2-carboxybenzyl group failing to form spirosulfuranes undergo the Pummerer reaction yielding lactones. In aqueous