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Stereochemical Features of the Condensation of Lithiated (S)-N,N-Dimethyl-1-phenylethylamine with o-Methoxybenzophenones.

✍ Scribed by V. M. Dem'yanovich; I. N. Shishkina; Ya. A. Gritsyuk; K. A. Potekhin; A. V. Chesnova; L. D. Ashkinadze


Publisher
John Wiley and Sons
Year
2005
Weight
19 KB
Volume
36
Category
Article
ISSN
0931-7597

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## Abstract Several acetoacetanilides were trilithiated in excess lithium diisopropylamide, and the resulting polylithiated intermediates were regioselectively condensed with lithiated methyl salicylates followed by acid cyclization to substituted 4‐oxo‐__N__‐aryl‐4__H__‐1‐benzopyran‐2‐acetamides (