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Directed diastereotopic lithiation of .beta.-heterosubstituted alkyl sulfones

✍ Scribed by Eisch, John J.; Galle, James E.

Book ID: 126797582
Publisher: American Chemical Society
Year: 1980
Tongue: English
Weight: 421 KB
Volume: 45
Category: Article
ISSN: 0022-3263
DOI: 10.1021/jo01310a065

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i. Br. (FRG) Summary: The facile ortho lithiation of the lithium salts of alkyl phenyl sulfones, Sa-c, to the o,a-dilithiosulfones 3a-c is described. Compounds 3a-c have been characterized by lsC and 'Ii WMR spectroscopy. The lithium salt ld, too, is preferentially lithiated in o-position to give th