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2005
Organo-phosphorus compounds
S 0080
Synthesis of Novel 2,5-Dihydro-1,5,2-diazaphosphinines from Primary Enamine
and from Alkyl Phosphonates. — Dihydrophosphinines (III), (V),
23- 180 Phosphonates
and (VII) are prepared from the reaction of nitriles with either primary enamine phosphonates or alkyl phosphonates in the presence of base. Highly stable hydrogen-bonded
amine-dihydrodiazaphosphinine adducts (IX) and (XIII) are formed by addition of
iPr2NH to product (VII) or by use of LDA (XI) as base in the reaction of alkyl phosphonates with nitriles. — (PALACIOS*, F.; OCHOA DE RETANA, A. M.;
PASCUAL, S.; LOPEZ DE MUNAIN, R.; OYARZABAL, J.; EZPELETA, J. M.;
Tetrahedron 61 (2005) 5, 1087-1094; Dep. Quim. Org., Fac. Farm., Univ. Pais Vasco,
E-01080 Vitoria, Spain; Eng.) — Klein
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