313969-96-9Relevant articles and documents
The synthesis of sterically demanding amino acid-derived cyclic phosphonamides
Sprott,Hanson
, p. 7913 - 7918 (2000)
The preparation and utilization of C2-symmetric 1,4-diamines in the synthesis of amino acid-derived cyclic phosphonamides 1-3 are described. The 1,4-diamines are synthesized via three methods: (i) amino acid/fumaryl chloride coupling followed by amide reduction, (ii) amino acid/1,4-diamine coupling followed by amide reduction, and (iii) a template-supported ring-closing metathesis/hydrolysis sequence. The pseudo C2-symmetric cyclic phosphonamides 1-3 are prepared by condensation of the C2-symmetric 1,4-diamines to P(III) centers, followed by oxidation.