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The Carboxylic Acid Group as an Effective Director of Ortho-Lithiation

✍ Scribed by Mortier, Jacques; Moyroud, Joel; Bennetau, Bernard; Cain, Paul A.

Book ID
118070299
Publisher
American Chemical Society
Year
1994
Tongue
English
Weight
322 KB
Volume
59
Category
Article
ISSN
0022-3263

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The tert-Butyl Sulfoximine Group as an Effective ortho-Director of Lithiation: ortho-Metalated S-(tert-Butyl)-S-phenylsulfoximines. -Lithiation of the S-tert-butyl-S-phenylsulfoximines (I) occurs selectively at the ortho-position. Trapping with electrophiles at -78 β€’ C affords the orthosubstituted