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- W1971945589 abstract "Abstract ( S )-5-(Azidomethyl)-2-pyrrolidone, obtained by the Mitsunobu reaction, was reduced to ( S )-5-(aminomethyl)-2-pyrrolidone which was hydrolysed to ( S )-4,5-diaminovaleric acid. The acid, after acylation with i -butyl or with (1 R , 3 R , 4 S )-menthyl chloroformate, underwent a Curtius reaction yielding the corresponding ( S )-1,2-dialkoxycarbonyl-1,2,4-triaminobutane. Alternatively, ( S )-5-(aminomethyl)-2-pyrrolidone was subjected to exhaustive t -butoxycarbonylation followed by ring-cleavage with ammonia to give ( S )- N 4 , N 5 , N 5 -triboc-4,5-diaminovaleramide and was converted by a Hofmann rearrangement to ( S )- N 1 , N 2 -di- t -butoxy carbonyl-4-methoxycarbonyl-1,2,4-triaminobutane." @default.
- W1971945589 created "2016-06-24" @default.
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- W1971945589 date "1993-01-01" @default.
- W1971945589 modified "2023-10-06" @default.
- W1971945589 title "Synthesis of chiral 1,2,4-triaminobutanes" @default.
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- W1971945589 doi "https://doi.org/10.1016/s0957-4166(00)86019-x" @default.
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