Chemistry Letters p. 185 - 188 (1981)
Update date:2022-08-02
Topics:
Okawara, Tadashi
Noguchi, Yoshihide
Matsuda, Takashi
Furukawa, Mitsuro
Inter- and intramolecular N-alkylation of α-halocarboxamides and dihalocarboxamides in the presence of solid phase transfer catalyst led to the corresponding piperazine-2,5-diones (2) and lactams (4) in the yields of 64-88 and 63-99 percent, respectively.A one-pot synthesis of β-lactams (7) from α-methyl-α,β-dibromopropionyl chloride (5) and α-amino acid using phase transfer catalyst was also successfully achieved.
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