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Versatile chiral synthons for 1,2-diamines: (4S,5S)- and (4R,5R)-4,5-dimethoxy-2-imidazolidinones

✍ Scribed by Ryushi Seo; Tadao Ishizuka; Alaa A.-M Abdel-Aziz; Takehisa Kunieda


Publisher
Elsevier Science
Year
2001
Tongue
French
Weight
92 KB
Volume
42
Category
Article
ISSN
0040-4039

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📜 SIMILAR VOLUMES


Stéréochimie de (2S, 4S, 5R;2S, 4S, 5S)-
✍ D. Tytgat; M. Gelbcke 📂 Article 📅 2010 🏛 Wiley (John Wiley & Sons) ⚖ 339 KB 👁 1 views

The condensation of (1 R,2S) or (lS,2S)-N,N'-dimethyI-l-phenylpropane-l 2-diamines with aldehydes gives respectively two diastereorneric 2-alkyl-l,3,4-trimethyI-S-phen limidazolidines. At thermodynamical equilibrium the major isomer in the erythro series is this one where t f ! e substituents at pos

(1R*,2S*,4S*,5S*)-Cyclo­hexa­ne-1,2,4,5-
✍ Mehta, Goverdhan ;Sen, Saikat ;Dey, Siddharth 📂 Article 📅 2005 🏛 International Union of Crystallography 🌐 English ⚖ 104 KB

The title compound, C 6 H 12 O 4 , exists in a chair form, with three of the four OH groups equatorially disposed. All four hydroxy groups participate in extensive intermolecular O-HÁ Á ÁO hydrogen bonding.