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
A practical preparation of diisopropyl phosphoryl protected amino acids
โ 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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โฆ 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.
๐ SIMILAR VOLUMES
## Abstract N, Nโdiisopropylโbis(4โchlorobenzyl) phosphoramidite is an easily accessible phosphitylating agent, which readily phosphorylates BocโSerโOMe, BocโThrโOMe and BocโTyrโOMe in good to high yields after __t__โBuOOH or MCPBA oxidation. The Bocโgroup can be removed without affecting the phosp