Journal of the Chemical Society. Chemical communications p. 1793 - 1794 (1992)
Update date:2022-09-26
Topics:
Tanaka, Hideo
Kameyama, Yutaka
Yamauchi, Takahito
Torii, Sigeru
A convenient synthesis of 2-exo-methylenepenams 1 is performed by reductive cyclization of allenecarboxylates 8 in a BiCl3/Zn bimetal redox system; subsequent manipulation of the 2-exo-methylene moiety of 1 opens new entries to β-lactam antibiotics and/or
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