Abstract
N-Ethyl-2-chloro-6-trimethylsilylbenzamide [Ring-14C(U)], 61, was synthesized in five steps from [U-14C]-benzoic acid 1 in an overall yield of 71%. Two key steps in the synthesis involve directed ortho metalation reactions2 on the aromatic ring. Purification by Silica gel Flash Column Chromatography produced 6 with a radiochemical purity of 99%. © 1997 John Wiley & Sons, Ltd.
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