Tetrahedron Letters p. 8425 - 8428 (1994)
Update date:2022-08-03
Topics:
Asao, Naoki
Shimada, Takashi
Tsukada, Naofumi
Yamamoto, Yoshinori
The conjugate addition of LSA 1 to t-butyl (4S)-4-(trityl)oxy-2-pentenoate 2d followed by aldol condensation with acetaldehyde produces a key intermediate 3 to β-lactam derivatives as a single diastereoisomer in 77% yield.
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