作者:F. Ramirez、S.L. Glaser、P. Stern、I. Ugi、P. Lemmen
DOI:10.1016/0040-4020(73)80191-7
日期:1973.1
extraordinarily rapid rate. In contrast, tertiary amines attack only the Me carbon of the exocyclic OMe group of the acyl phosphate to give quaternary ammonium salts of 5-membered cyclic acyl phosphates. These cyclic mixed anhydrides of phosphoric acid are the most powerful phosphorylating agents for oxygen-containing nucleophiles known at present. The end-products of the phosphorylations are phosphotriesters
光气与联乙酰和亚磷酸三甲酯制得的氧代磷烷反应生成α-(二甲基磷酸)-β-酮酰氯,在催化下分子内损失氯甲烷。由CuSO 4,并产生第一个报道的5元环式磷酸酯。磷酰基磷仅以极快的速度受到水,醇和酚的磷攻击。相反,叔胺仅攻击酰基磷酸的外环OMe基团的Me碳,以产生5元环状酰基磷酸的季铵盐。这些磷酸的环状混合酸酐是目前已知的最有效的含氧亲核试剂的磷酸化剂。磷酸化的最终产物是磷酸三酯,磷酸二酯和磷酸单酯,它们含有易于除去的乙酰乙酰基,[(CH 3 CO)(CH 3)CHO] P(O)(OR)(OR')。