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Practical and Efficient Synthesis of Orthogonally Protected α-2,3-Diaminopropionic Acid (2,3-Dap), 2,4-Diaminobutanoic Acid (2,4-Dab), and Their N-Methylated Derivatives.

✍ Scribed by R. V. Ramana Rao; Subramanyam J. Tantry; Vommina V. Suresh Babu


Publisher
John Wiley and Sons
Year
2007
Weight
26 KB
Volume
38
Category
Article
ISSN
0931-7597

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Efficient Synthesis of 4-Halo-4-penten-2-ones and 3-Halo-3-butenoic Acids/Esters via Hydrohalogenation Reaction of 3,4-Pentadien-2-one and 2,3-Butadienoic Acid/Methyl Ester. -Allenes bearing an electron-withdrawing group react with alkali metal halides and acetic acid to give useful yields of β,γ-u