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A practical preparation of diisopropyl phosphoryl protected amino acids

โœ Scribed by K.M.J. Brands; K. Wiedbrauk; J.M. Williams; U.-H. Dolling; P.J. Reider


Publisher
Elsevier Science
Year
1998
Tongue
French
Weight
244 KB
Volume
39
Category
Article
ISSN
0040-4039

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โœฆ Synopsis


N-Diisopropyl phosphoryl protected amino acids can be prepared in high yield and without racemization by slow addition of sodium hypochlorite to a solution of the amino acid and diisopropylphosphite in water while carefully maintaining a constant pH via the addition of sodium hydroxide.


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ChemInform Abstract: A Practical Prepara
โœ K. M. J. Brands; K. Wiedbrauk; J. M. Williams; U.-H. Dolling; P. J. Reider ๐Ÿ“‚ Article ๐Ÿ“… 2010 ๐Ÿ› John Wiley and Sons โš– 26 KB ๐Ÿ‘ 2 views

A Practical Preparation of Diisopropyl Phosphoryl Protected Amino Acids. -Slow addition of hypochlorite to an alkaline solution of an amino acid (I) and (IV) and diisopropylphosphite (I) allows the preparation of N-diisopropyl phosphoryl protected amino acids (III) and (V) without racemization. -(B

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โœ H. B. A. de Bont; J. H. van Boom; R. M. J. Liskamp ๐Ÿ“‚ Article ๐Ÿ“… 2010 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 235 KB

## Abstract N, Nโ€diisopropylโ€bis(4โ€chlorobenzyl) phosphoramidite is an easily accessible phosphitylating agent, which readily phosphorylates Bocโ€Serโ€OMe, Bocโ€Thrโ€OMe and Bocโ€Tyrโ€OMe in good to high yields after __t__โ€BuOOH or MCPBA oxidation. The Bocโ€group can be removed without affecting the phosp