中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 2-diethylamino-1,3,2-dioxaphospholane | 3741-34-2 | C6H14NO2P | 163.156 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 2-diethylamino-1,3,2-dioxaphospholane | 3741-34-2 | C6H14NO2P | 163.156 |
—— | O,O-diethyl diethylphosphoramidothioate | 5851-18-3 | C8H20NO2PS | 225.292 |
—— | diethyl-amidophosphoric acid diethyl ester | 3167-69-9 | C8H20NO3P | 209.225 |
The phosphorylation of Ac-Ser- NHMe or Ac- Gly-Ser-Gly-NHMe with diphenyl phosphorochloridate /pyridine gave diphenyl hydrogen phosphate in high yield instead of the expected-Ser(PO3Ph2)-peptide. A 31P n.m.r . spectroscopy study of the phosphorylation reaction established that, with the use of diphenyl phosphorochloridate in pyridine, the intermediate diphenyl phosphoro-N-pyridinium chloride was the active phosphorylation species and that phosphorylation of the hydroxy group of Ac-Ser- NHMe or Ac- Gly-Ser-Gly-NHMe was followed by rapid dephosphorylation of the O-( diphenylphosphono ) seryl residue. While diethyl phosphorochloridate /pyridine phosphorylation of Ac-Ser- NHMe also did not give Ac-Ser(PO3Et2)- NHMe, both the two-step ( i ) diethyl phosphorochloridite /pyridine, (ii) iodine/water and the two-step (i) diethyl N,N-diethylphosphoramidite/1H-tetrazole, (ii) iodine/water 'phosphite-triester' phosphorylation of Ac-Ser- NHMe gave Ac- Ser(PO3Et2)- NHMe in high yield.