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- W2949973779 abstract "A convenient synthesis of phosphonic analogues of pipecolic acid and its heterocyclic analogues is reported. The major step of the elaborated procedure is the introduction of the phosphonate group into the skeleton of the appropriate cyclic amide through N ‐acyliminium ions. The former ones were obtained by preparation of the hemiaminals or their methyl ethers from the N ‐protected cyclic amides. Finally, the reaction with trimethyl phosphite in the presence of BF 3 ·OEt 2 afforded the desired phosphonates, which were converted into phosphonic acids by the hydrolysis of phosphonate moiety with simultaneous cleavage of the nitrogen protecting groups." @default.
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- W2949973779 date "2019-06-13" @default.
- W2949973779 modified "2023-10-15" @default.
- W2949973779 title "A Straightforward Synthesis of Six‐Membered‐Ring Heterocyclic α‐Aminophosphonic Acids from <i>N</i> ‐Acyliminium Ions" @default.
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- W2949973779 doi "https://doi.org/10.1002/jhet.3593" @default.
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