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Asymmetric cyclopropanation of ketene silyl acetal with allylic acetate catalyzed by a palladium complex

✍ Scribed by Akiharu Satake; Hitomi Kadohama; Hiroyuki Koshino; Tadashi Nakata

Publisher: Elsevier Science
Year: 1999
Tongue: French
Weight: 239 KB
Volume: 40
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(99)00582-1

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✦ Synopsis

The fwst asymmetric cyclopropanation of ketene silyl acetal with allylic acetate was achieved. New chiral oxazolidinylpyrazole ligands and their TlLallylpalladium complexes were synthesized. Reaction of cinnamyl acetate with ketene silyl acetal of ethyl isobutylate in the presence of a palladium complex gave a phenyl cyclopropanc derivative in 20-54%ee.

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