136226-19-2Relevant articles and documents
Triphenylphosphoranylidene substituted heterocycles as versatile intermediates
Katritzky, Alan R.,Vincek, Adam S.,Steel, Peter J.
experimental part, p. 1401 - 1423 (2009/07/17)
N-Cbz-(α-aminoacyl)benzotriazoles 5a-e reacted with (stabilized-methylene)triphenylphosphoranes 6 and 13 to give the corresponding esters 7a-e (66-91%) or nitriles 14a-e (63-85%). Deprotection of N-Cbz-γ-amino-β-oxo-α-triphenylphosphoranylidene esters 7a-