Affiliation:
1. Institut für Bioorganische Chemie der Ukrainischen Akademie der Wissenschaften, ul. Murmanskaya 5, 252660 Kiev, UdSSR
2. Institut für Anorganische und Analytische Chemie der Technischen Universität, Hagenring 30, D-W-3300 Braunschweig
Abstract
The methylene-bis(dialkylaminochlorophosphines) 2a and 2b react with N,N′-dimethyl- N,N′-bis(trimethylsilyl)urea 1 to give the 1,5-diaza-2,4-diphosphorinan-6-ones, 4a and 4b, each of which exists as two isomers. Sulfuration of 4a and 4b led to the stable derivatives, 5a and 5b, which, with the help of column chromatography, were separated into pure cis- and trans-isomers. The structures were established, based upon NMR-spectroscopic, chemical and analytical data.
Cited by
11 articles.
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1. Geminal Dianions Stabilized by Main Group Elements;Chemical Reviews;2019-06-13
2. ChemInform Abstract: cis-trans-Isomerism in 1,5-Diaza-2,4-diphosphorinan-6-ones.;ChemInform;2010-08-22
3. Synthesis of 1,2-dihydro-1,3-diaza-2λ5,4λ5-2,4-diphosphorine 2-oxides;Tetrahedron;2002-03
4. An Unusual Oxidation of 1,5-Dimethyl-2,4-bis(dialkylamino)-1,5-diaza-2,4-diphosphinan-6-one with Hexafluoroacetone;European Journal of Inorganic Chemistry;2001-01
5. Stereoselective Formation of the R,S Isomer of a Methylene-Bridged Diphosphine Derivative of p-tert-Butylcalix[4]arene and Subsequent Reactivity;Inorganic Chemistry;1995-10