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Low-Valent Titanium Induced Cyclization of Dimeric Dianions of Anils with Triphosgene: A Safe and Efficient Method for the Syntheses of Substituted Imidazolidine 2-ones.

✍ Scribed by Zhifang Li; Yongmin Zhang

Publisher: John Wiley and Sons
Year: 2010
Weight: 28 KB
Volume: 33
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.200250091

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## Abstract The reaction of Schiff bases or aldehydes with samarium diiodide in dry THF, followed by addition of triphosgene, gives substituted imidazolidin‐2‐ones and 4,5‐diaryl–1,3‐dioxolan‐2‐ones, respectively, in moderate to good yields under mild conditions. © 2003 Wiley Periodicals, Inc. Hete