Tetrahedron Letters p. 619 - 620 (1980)
Update date:2022-08-05
Topics:
Oida, Sadao
Yoshida, Akira
Hayashi, Teruo
Nakayama, Eiji
Sato, Sadao
Ohki, Eiji
The structure for the fused β-lactam obtained by treatment of the secolactam (3) with base in the presence of Cu(I)-ion is not the penem (1)(R=CH3), but the isopenem (4) on the basis of X-ray analysis.
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Doi:10.1016/S0040-4039(00)92745-X
(1980)Doi:10.1021/jo01066a645
(1961)Doi:10.1039/c9cc08582c
(2020)Doi:10.1016/S0040-4039(00)78641-2
(1980)Doi:10.1002/anie.201901059
(2019)Doi:10.1039/P19800001233
(1980)
