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Tellurium , exchange between

A neat synthesis of tellurophenes appeared this year which involved an iodine—magnesium exchange between an ortho alkenylaryl iodide followed by trapping with tellurium (13AG(I)10690). Initial attempts to extend this... [Pg.122]

Reactions of the 5 c6>-cubane 3 with chalcogens were also investigated. While mono-chalcogenides are readily produced in the case of sulfur, selenium and tellurium, further reaction with either sulfur or selenium produced only insoluble products. The solid-state structures of the mono-selenide and mono-telluride 65a and 65b (Scheme 2.2.14) revealed that one of the Sn(N Bu)2(NH Bu) sites was oxidized in preference to the unique Sn(N Bu)(NH Bu)2 tin center. Solution-state NMR studies indicated that chalcogen exchange occurs exclusively between the two Sn(N Bu)2(NH Bu) sites. In the case of selenium, in addition to 65a, the selenido-bridged dimer 66 was present in solution as indicated by /sn-Se coupling constants (65a, 3220 Hz 66, 779 Hz). [Pg.63]

See other pages where Tellurium , exchange between is mentioned: [Pg.81]    [Pg.689]    [Pg.1144]    [Pg.81]    [Pg.165]    [Pg.6017]    [Pg.118]    [Pg.68]    [Pg.47]    [Pg.651]    [Pg.927]    [Pg.50]    [Pg.49]    [Pg.199]    [Pg.671]    [Pg.443]    [Pg.443]    [Pg.63]    [Pg.64]    [Pg.379]    [Pg.26]    [Pg.1317]    [Pg.651]    [Pg.164]   
See also in sourсe #XX -- [ Pg.75 ]



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