HYDRO-DE-PHOSPHONIATION OF 4-SUBSTITUTED-4-TRIPHENYLPHOSPHONIO-S(4H)-OXAZOLONES WITH HYDROGEN IODIDE
摘要:
4-Substituted-4-triphenylphosphonio-5(4H)-oxazolones, when reacted with hydrogen iodide in methylene chloride at room temperature, undergo hydro-de-phosphoniation to 5(4H)-oxazolonium salts, which react with methanol and triethylamine to give the corresponding N-acyl alpha-amino acid methyl esters. The possible mechanisms of hydro-de-phosphoniation is discussed.
HYDRO-DE-PHOSPHONIATION OF 4-SUBSTITUTED-4-TRIPHENYLPHOSPHONIO-S(4H)-OXAZOLONES WITH HYDROGEN IODIDE
摘要:
4-Substituted-4-triphenylphosphonio-5(4H)-oxazolones, when reacted with hydrogen iodide in methylene chloride at room temperature, undergo hydro-de-phosphoniation to 5(4H)-oxazolonium salts, which react with methanol and triethylamine to give the corresponding N-acyl alpha-amino acid methyl esters. The possible mechanisms of hydro-de-phosphoniation is discussed.