25979-07-1Relevant articles and documents
Tetra-tert-butylcyclotetraphosphane, 4
Weigand, Willis,Cordes, A. W.,Swepston, Paul N.
, p. 1631 - 1634 (1981)
C16H36P4, monoclinic, P21/c, a=9.391 (1), b=14.029 (2), c=16.854 (2) Angstroem, β=95.80 (1) deg, V=2196 Angstroem3, Z=4, Do (by flotation in ZnCl2 solution)=1.08, Dc=1.07 Mg m-3.The central P4 ring is non-planar with P-P distances of 2.212 (2) Angstroem and P-P-P-P torsion angles of 24.5 deg.The tert-butyl groups are on alternate sides of the ring such that the molecule very nearly possesses 42m symmetry.The final R was 0.037 for the 1981 observed reflections.
Novel Heterocycles Comprising Alternating Phosphorus Atoms and Alkyne Units
Scott, Lawrence T.,Unno, Masafumi
, p. 7823 - 7825 (1990)
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A new and convenient approach for the synthesis of P-stereogenic intermediates bearing a tert-butyl(methyl)phosphino group
Liu, Yang,Ding, Boqiang,Liu, Delong,Zhang, Zhenfeng,Liu, Yangang,Zhang, Wanbin
, p. 4959 - 4966 (2017)
Chiral organophosphorus compounds possessing a P-stereogenic center have been widely used as agricultural chemicals, pharmaceuticals, organocatalysts, and ligands for transition-metal catalysis. P-Stereogenic intermediates bearing a tert-butyl(methyl)phosphino group are important for the preparation of several commonly used diphosphine ligands. However, previously reported synthetic methods used hazardous starting materials and are difficult to operate. In order to overcome these limitations, a new and convenient synthesis for a number of P-stereogenic intermediates possessing a tert-butyl(methyl)phosphino group has been developed. The reported route relies on an air- and moisture-stable secondary phosphine oxide prepared from a readily available starting material, trichlorophosphane.
Ferrocene-containing sterically hindered phosphonium salts
Ermolaev, Vadim,Gerasimova, Tatiana,Kadyrgulova, Liliya,Shekurov, Ruslan,Dolengovski, Egor,Kononov, Aleksandr,Miluykov, Vasily,Sinyashin, Oleg,Katsyuba, Sergei,Budnikova, Yulia,Khrizanforov, Mikhail
, (2018/10/31)
The synthesis and physical properties of the series of the ferrocenyl-containing sterically hindered phosphonium salts based on di(tert-butyl)ferrocenylphosphine is reported. Analysis of voltamogramms of the obtained compounds revealed some correlations b