Chiral Separation of Amines and Amino-alcohols by Fractional Reactive Extraction
نویسندگان
چکیده
منابع مشابه
In situ approach for testing the enantiopurity of chiral amines and amino alcohols by 1H NMR.
An in situ approach involving a simple mix and shake method for testing the enantiopurity of primary, secondary and tertiary chiral amines and their derivatives, chiral amino alcohols, by (1)H-NMR spectroscopy is developed. The protocol involves the in situ formation of chiral ammonium borate salt from a mixture of C2 symmetric chiral BINOL, trialkoxyborane and chiral amines. The proposed conce...
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A chiral N,N'-dioxide-Ni(II) complex was found to exhibit highly enantioselective fluorescent recognition of chiral amines and amino alcohols. It can be used to determine their concentration and ee value. Using a 96-well plate, high-throughput screening for enantiomer discrimination was accomplished.
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(77)Se NMR offers superior sensing of chirality within the structure of the diastereomers (Deltadelta up to 6.1 ppm), compared to (13)C (Deltadelta < 1 ppm) and (1)H (Deltadelta < 0.2 ppm). The developed procedure is equally well suitable for determination of the enantiomeric purity of chiral alcohols and amines as pure samples as well as reaction mixtures and crude products.
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The four-step conversion of a series of N-Boc-protected l-amino acid methyl esters into enantiopure N-Boc allylamines by a modified Julia olefination is described. Key steps include the reaction of a lithiated phenylalkylsulfone with amino esters, giving chiral β-ketosulfones, and the reductive elimination of related α-acetoxysulfones. The overall transformation takes place under mild condition...
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کاتالیست یک سنتز جدید برای تیواترها توصیف شده است. واکنش الکل ها با آریل، هتروآریل و آلکیل تیو ل ها درحضور 1،3،5- تری آزو- 2،4،6- تری فسفرین-2،2،4،4،6،6 هگزاکلراید ((tapc به عنوان یک کاتالیست موُثر، بازده های خوب تا عالی از تیواترها را حاصل می کند. علاوه براین، واکنش تحت شرایط بدون فلز و بدون حلال پیش می رود، بنابراین یک مکمل جالب برای روش های شناخته شده سنتز تیواترها ارائه می دهد. یک مکانیسم ا...
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ژورنال
عنوان ژورنال: Chemie Ingenieur Technik
سال: 2006
ISSN: 0009-286X,1522-2640
DOI: 10.1002/cite.200650054