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[摘要]:Addition of a Reformatsky reagent to alpha-aryl(alkyl) alpha-trifluoromethyl N-tert-butanesulfinyl hemiaminals, bench-stable surrogates of trifluoromethyl ketoimines, provided beta-alkyl(aryl) beta-trifluoromethyl beta-amino acids derivatives in good yields and high diastereoselectivities. The N-tert-butanesulfinyl beta(3,3)-amino esters were further utilized as versatile intermediates for the elaboration of heterodi- and -tripeptides. |
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