| Literature DB >> 20024206 |
Yudai Watanabe1, Takuya Washio, Naoyuki Shimada, Masahiro Anada, Shunichi Hashimoto.
Abstract
The first example of a chiral Lewis acid-catalyzed enantioselective hetero-Diels-Alder (HDA) reaction between 1-dimethylamino-3-silyloxy-1,3-butadiene (Rawal's diene) and aldehydes is described. The cycloaddition reaction under the influence of 1 mol% of dirhodium(II) tetrakis[N-benzene-fused-phthaloyl-(S)-piperidinonate], Rh(2)(S-BPTPI)(4), proceeded cleanly and gave, after treatment with acetyl chloride, the corresponding dihydropyranones in up to 99% ee.Entities:
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Year: 2009 PMID： 20024206 DOI： 10.1039/b919535a
Source DB: PubMed Journal: Chem Commun (Camb) ISSN： 1359-7345 Impact factor: 6.222