Reaction of secondary phosphine selenides with the system Se/MOH (M=Li, Na, K, Rb, Cs): A novel three-component synthesis of diorganodiselenophosphinates
摘要:
Secondary phosphine selenides, R(2)P(Se) H (R = PhCH(2)CH(2), PhCH(Me) CH(2), 4-t-BuC(6)H(4)CH(2)CH(2), NaphthylCH(2)CH(2), Ph), react with the system Se/MOH (M = Li, Na, K, Rb, Cs) in the system THF/EtOH at ambient temperature unusually fast (20-30 s) to give cleanly and almost quantitatively (in 94-100% yield) earlier unknown diorganodiselenophosphinates of alkali metals. (C) 2009 Elsevier B. V. All rights reserved.
Reaction of secondary phosphine selenides with the system Se/MOH (M=Li, Na, K, Rb, Cs): A novel three-component synthesis of diorganodiselenophosphinates
摘要:
Secondary phosphine selenides, R(2)P(Se) H (R = PhCH(2)CH(2), PhCH(Me) CH(2), 4-t-BuC(6)H(4)CH(2)CH(2), NaphthylCH(2)CH(2), Ph), react with the system Se/MOH (M = Li, Na, K, Rb, Cs) in the system THF/EtOH at ambient temperature unusually fast (20-30 s) to give cleanly and almost quantitatively (in 94-100% yield) earlier unknown diorganodiselenophosphinates of alkali metals. (C) 2009 Elsevier B. V. All rights reserved.
Synthesis of new secondary phosphine chalcogenides with bulky substituents from aryl(hetaryl)ethenes, red phosphorus, sulfur, and selenium
作者:S. F. Malysheva、A. V. Artem’ev、N. K. Gusarova、B. V. Timokhin、A. A. Tatarinova、B. A. Trofimov
DOI:10.1134/s1070363209080052
日期:2009.8
Phosphine generated along with hydrogen from red phosphorus and aqueous potassium hydroxide selectively reacts with aryl(hetaryl)ethenes (alpha-methylstyrene, 2-vinylnaphthalene and 5-vinyl-2-methylpyridine) in superbasic system KOH-DMSO(H2O) to give secondary phosphines. The latter are practically quantitatively oxidized by elemental sulfur or selenium (20-25 degrees C, toluene, 0.5 h), to afford the hitherto unknown secondary phosphine chalcogenides with bulky arylalkyl pyridine and naphthyl substituents.