- New trigonal tris(phosphine oxides)
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The reaction of 1,1,1-tris(chloromethyl)propane with diphenylphosphine under phase-transfer conditions afforded 1,1,1-tris(diphenylphosphinomethyl) propane, whose oxidation gave a previously unknown representative of trigonal tris(phosphine oxides), viz.,
- Pisareva,Petrovskii,Lyssenko,Antipin,Nifant'ev
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- Modulating the propeller-like shape of a tripodal C(CH2PPh2)3 fragment by the size of the substituent at the pivotal carbon atom in macrobicyclic tri-λ5-phosphazenes
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The chiral macrobicyclic tri-λ5-phosphazenes formed by tripod-tripod coupling of tris(3-azidobenzyl)amines and 1,1,1-tris[(diphenylphosphino)methyl]methanes present helical topologies as a result of combining two propeller-shaped tripodal fragm
- Alajarín, Mateo,López-Leonardo, Carmen,Berná, José
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p. 4450 - 4458
(2008/02/03)
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- Center-to-propeller and propeller-to-propeller stereocontrol in a series of macrobicyclic tri-λ5-phosphazenes
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Center-to-propeller stereocontrol in a family of macrobicyclic, double-propeller shaped tri-λ5-triphosphazenes remains constant in the upper tribenzylamine fragment as the size of the pivotal group at the lower tris(phosphane) fragment is gradu
- Alajarín, Mateo,López-Leonardo, Carmen,Berná, José,Sánchez-Andrada, Pilar
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p. 3583 - 3586
(2008/02/02)
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- METHOD FOR PRODUCING TERTIARY PHOSPHINES
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The invention relates to a method for producing tertiary phosphines by reacting a compound of general formula (I) with (a) an alkali metal in an organic aprotic solvent and (b) a compound of general formula (II). In formula (I), A represents R1 or L2, B represents R2 or L3, where the groups R1 and R2 independently of one another stand for an organic group with respectively between 1 and 30 carbon atoms and said groups R1 and R2 can also be bonded together. The leaving groups L1 to L3 independently of one another represent halogen, alkyloxy with between 1 and 10 carbon atoms or aryloxy with between 6 and 10 carbon atoms. In formula (II), the group R3 represents an organic group with respectively between 1 and 30 carbon atoms and the leaving group L4 represents halogen, alkyloxy with between 1 and 10 carbon atoms or aryloxy with between 6 and 10 carbon atoms. The reaction mixture that is obtained is hydrolysed using an aqueous base with a pH value of > 10 and the organic phase is then separated from the aqueous phase.
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Page/Page column 20-21
(2008/06/13)
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