Process for producing 1-alkoxycarbonyl nitrogenous saturated heterocyclic derivative
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United States of America Patent
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Issued Date -
Dec 2, 2004
app pub date -
Jan 30, 2004
filing date -
Dec 27, 2001
priority date (Note) -
Abandoned
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Abstract
A method for producing N-protected heterocyclic compounds such as 1-alkoxycarbonyl-3-aminopyrrolidines through position-selective reaction at the nitrogen atom that constitutes the hetero ring of a nitrogen-containing saturated heterocyclic compound having two nitrogen atoms such as 3-aminopyrrolidine. A dialkyl dicarbonate (ROCO-O-COOR) is reacted with a nitrogen-containing saturated heterocyclic compounds having two nitrogen atoms, at pH of from 9 to 14 to obtain a high-purity 1-alkoxycarbonyl nitrogen-containing saturated heterocyclic compound.
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