Tetrahedron Letters p. 3049 - 3050 (1991)
Update date:2022-08-03
Topics:
Trigalo, Franois
Molliex, Christophe
Champion, Brigitte
Azerad, Robert
The tosyl ester 2 of tetraethyl 1-acetamido-4-hydroxybutane- 1,1,3,3-tetracarboxylate gave 4-methylene glutammic acid in 90% yield by refluxing with concentrated HC1. Treatment of 2 with NaOEt, then with refluxing concentrated HC1 gave a 54% yield of cis
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