82820-74-4Relevant articles and documents
New synthesis of 2-methyleneaziridines and 2-methyleneazetidines by dimethyl titanocene mediated methylenation of α- and β-lactams
Abbaspour Tehrani, Kourosch,De Kimpe, Norbert
, p. 1975 - 1978 (2007/10/03)
2-Methyleneaziridines and 2-methyleneazetidines were synthesized via a titanium mediated olefination procedure starting from the corresponding α- lactams and β-lactams. (C) 2000 Elsevier Science Ltd.
Convenient Syntheses of Cyclic Carboxamides from α,β,γ,δ and ε-halocarboxamides under Phase Transfer Conditions
Okawara, Tadashi,Matsuda, Takashi,Furukawa, Mitsuru
, p. 1225 - 1233 (2007/10/02)
Piperazine-2,5-diones (2) were prepared by N-alkylation between two molecules of α-halocarboxamides (1) in the presence of a phase transfer catalyst in yields of 64-88percent. β,γ,δ and ε-Lactams (6,9 and 13) were similarly synthesized by intramolecular N-alkylation of the corresponding halocarboxamides (5, 8 and 12) under phase transfer conditions in 53-99percent yields.Keywords--piperazine-2,5-dione; β-lactam; γ, δ, and ε lactams; bis-β-lactam; phase transfer catalyst; intramolecular N-alkylation
