Das unterschiedliche massenspektrometrische Fragmentierungsverhalten von Lysinmethylester und dessenN,N?-Diacetylderivat. 27. Mitteilung �ber das massenspektrometrische Verhalten von Stickstoffverbindungen
作者:Felix Roessler、Manfred Hesse
DOI:10.1002/hlca.19770600209
日期:1977.3.9
The Different Behaviour of Lysine Methyl Ester and its N,N′-Diacetyl Derivative under Electron Impact
Competitive intramolecular aminolysis: Relative rates of 5- and 6-membered lactam ring closure
作者:Kevin H. Patterson、Gary J. Depree、Johannes A. Zender、Peter J. Morris
DOI:10.1016/s0040-4039(00)76532-4
日期:1994.1
5-Dape Me) undergoes competitive intramolecular aminolysis to 5-aminomethyl-2-pyrrolidinone (L5) and 5-amino-2-piperidinone (L6) in dilute alkaline aqueous solution at 25°C. Use of this single compound provides an ideal case for assessing the relative rates of 5- and 6-membered lactam ring closure. Assessments are also made using the intramolecular aminolysis of pairs of compounds: methyl 2,4-diaminobutanoate