3,3-Bis(diethylphosphono)-1(3<i>H</i>)-isobenzofuranone and Its Properties
作者:V. N. Zemlianoy、A. O. Kolodiazhna、A. V. Gutov、A. N. Chernega、V. P. Kukhar、O. I. Kolodiazhnyi
DOI:10.1080/10426507.2010.508064
日期:2011.3.31
chloride with sodium diethylphosphite led to the formation of new 3,3-bis(diethylphosphono)-1-(3H)-isobenzofurane 1. The reaction of bis-phosphonate with alkylamine occurs with replacement of an ester oxygen by an imine group to afford the crystalline isoindolyl-bis-phosphonate—a representative of this new type of organophosphorusheterocycles.
Synthesis of tetraethyl (2-benzyl-3-oxoisoindolyl-1,1-diyl)-bisphosphonate and its properties
作者:V. N. Zemlyanoi、O. I. Kolodyazhnyi
DOI:10.1134/s1070363211060053
日期:2011.6
The reaction of o-phthalyl chloride with sodium diethylphosphite affords a cyclic bisphosphonate, 3,3-bis(diethylphosphono)-1(3H)-isobenzofuranone. The reaction of 1(3H)-isobenzofuranone with potassium carbonate proceeds through the ring opening and elimination of one phosphonate group to give acyclic alpha-ketophosphonate. At the same time, the reaction of bisphosphonate with the concentrated hydrochloric acid does not lead to the ring opening but gives bisphosphonic acid in a good yield. 3,3-Bis(diethylphosphono)-1(3H)-isobenzofuranone reacts with benzylamine in the presence of triethylamine with the replacement of endocyclic oxygen atom by benzylamino group, which leads to the formation of the corresponding bisphosphonate phthalimide, the first representative of a new type of bisphosphonates and phosphorus heterocycles.
3,3-bis(diethylphosphono)-1(3H)-isobenzofuranone and its properties
作者:V. N. Zemlyanoi、V. P. Kukhar’、O. I. Kolodyazhnyi