1155266-28-6Relevant articles and documents
Dual supermesityl stabilization: A room-temperature-stable 1,2,4-triphosphole radical, sigmatropic hydrogen rearrangements, and tetraphospholide anion
Ionkin, Alex S.,Marshall, William J.,Fish, Brian M.,Marchione, Alexander A.,Howe, Laurie A.,Davidson, Fredric,McEwen, Charles N.
, p. 2386 - 2390 (2008)
Cesium 3,5-bis(2,4,6-tri-tert-butylphenyl)-1,2,4-triphospholide (12) and cesium 5-(2,4,6-tri-tert-butylphenyl)tetraphospholide (13) were synthesized and isolated with flat fivemembered rings, which are an indication of the aromaticity in these anions. Compound 13 is the first example of a stable tetraphospholide anion, which is structurally characterized. Kinetic stabilization of the 1,2,4-triphospholide system by two supermesityl groups resulted in the detection of the room-temperature-stable radical 17 and the observation of a series of successive sigmatropic hydrogen shifts in the first stable 1H-1,2,4-triphosphole 14 with a P-H bond. Wiley-VCH Verlag GmbH & Co. KGaA, 2008.
