M. Meisel et al., Synthesis of phosporus heterocycles using the donor-stabilized dithiomonometaphosphoryl chloride as preparative tool, PHOSPHOR SU, 168, 2001, pp. 291-296
Citations number
4
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS
The reactivity of the donor-stabilized monometaphosphoryl chloride Py doubl
e right arrow PS2Cl (1) versus multiple bond systems and organometallic com
pounds has been studied. Thus, on the reaction of 1 with diphenyl acetylene
at elevated temperature the five-membered ring systems 24 are formed. In t
he first step probably cycloaddition of the intermediary liberated free mon
ometaphosphoryl chloride PS2Cl with diphenyl acetylene leads to the 1-thia-
phosphacyclobut-3-ene 6. This assumption will be supported by theoretical c
alculations. Attempts to eliminate one sulfur atom front the disulfide brid
ge in 2 result in the bicyclic ring system 5 besides a compound which is as
sumed to be 6. The reaction of 1with tertBuLi gives the dithiaphosphetane 7
whereas with NaN(SiMe3)(2) the diazadiphosphetidine 8 is obtained.