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1H NMR signal of the aldehyde protons: M. Reggelin, T. Heinrich, unpublished results.
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Reggelin, M.1
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33847529510
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Raney Nickel requires a large excess (> 10 equiv) to provide satisfying results, and much of the pyrrolidine formed is absorbed. Lithium naphthalenide works fast, but ring-opened by-products are formed
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Raney Nickel requires a large excess (> 10 equiv) to provide satisfying results, and much of the pyrrolidine formed is absorbed. Lithium naphthalenide works fast, but ring-opened by-products are formed.
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35
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33847525857
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-
Desilyation of the TMS-protected derivative occurs by solvolysis during the desulfuration. More stable silyl ethers must be previously cleaved in an extra step
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Desilyation of the TMS-protected derivative occurs by solvolysis during the desulfuration. More stable silyl ethers must be previously cleaved in an extra step.
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39
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0002050576
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