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0344148431
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note
-
The alkyllithium was added via cannula with a rapid stream of nitrogen over a period of 5-30 s.
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36
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Unpublished results, this laboratory
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0345010916
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note
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The free radical scavengers employed were N-nitrosobenzene and N-tert-butyl-α-phenylnitrone purchased from Aldrich.
-
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40
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0345441962
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note
-
The protecting groups employed were Pf, BOC, acetyl, and Bs. Low yields were obtained with the acetyl, BOC and Bs ranging from 15 to 50%. The Pf-protected system did not cyclize. Initial reactions with the N-acetyl compound were performed by R. Häner, this laboratory.
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