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(2S,4R,5R)-(−)-3-Isopropyl-4-methyl-5-phenyl-1,2,3-oxathiazolidine 2-Oxide

✍ Scribed by Robinson, P. D. ;Hua, D. H. ;Chen, J. ;Lagneau, N.

Book ID
114511891
Publisher
International Union of Crystallography
Year
1995
Tongue
English
Weight
340 KB
Volume
51
Category
Article
ISSN
0108-2701

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(3R,4S)-2-Isopropyl-3-methyl-4-phenyl-3,
(3R,4S)-2-Isopropyl-3-methyl-4-phenyl-3,4-dihydroisoquinolinium iodide
✍ Ben Ali, Karim ;Chiaroni, Angèle ;Bohe, Luis 📂 Article 📅 2007 🏛 International Union of Crystallography 🌐 English ⚖ 719 KB

The title compound, C 19 H 22 N + ÁI À , is a new dihydroisoquinolinium salt, used as a catalyst in asymmetric epoxidation. It was characterized by NMR spectroscopy and X-ray crystallographic techniques. The absolute configurations of the two stereogenic centres were established by the refinement of

(+)-(4R,5S)-4-Methyl-5-phenyl-3-[2(S)-ph
(+)-(4R,5S)-4-Methyl-5-phenyl-3-[2(S)-phenyl­propion­yl]oxazolidin-2-one
✍ Coumbarides, Gregory S. ;Eames, Jason ;Motevalli, Majid ;Malatesti, Nela ;Yohann 📂 Article 📅 2006 🏛 International Union of Crystallography 🌐 English ⚖ 223 KB

In the title compound, C 19 H 19 NO 3 , formed from enantiomerically pure (+)-(4R,5S)-4-methyl-5-phenyl-2-oxazolidinone and racemic 2-phenylpropanoyl chloride, the two carbonyl groups are oriented anti to each other, and the two methyl groups are oriented anti to each other.