A highly asymmetric Pummerer-type cyclization of chiral, non-racemic β-amidosulfoxides induced by O-silylated ketene acetals

DOI: 10.1016/0040-4039(94)02180-J

Source and publish data:

Tetrahedron Letters p. 115 - 118 (1995)

Update date:2022-08-04

Topics: NMR spectroscopy Chiral Enantioselective Asymmetric Cyclization reaction Non-racemic Chirality determination Pummerer-type cyclization O-silylated ketene acetals Induced

Authors:

Kita, Yasuyuki

Shibata, Norio

Kawano, Noriyuki

Tohjo, Takashi

Fujimori, Chino

Matsumoto, Keita

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Article abstract of DOI:10.1016/0040-4039(94)02180-J

The first highly asymmetric Pummerer-type cyclization of chiral, non-racemic β-amidosulfoxides leading to enantiomerically enriched β-lactams (80-85% ee) is described. S- and R-sulfoxides (S-2a-d and R-2a-c) were treated with O-methyl-O-tert-butyldimethyl

Full text of DOI:10.1016/0040-4039(94)02180-J

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