Synthesis of Some New Phosphino Acetylenes

Abstract

The synthesis and characterization of the new phosphino acetylenes (C6H5)2PC≡CCF3, (C6H5)2PC≡CC(CH3)3, (C6H5)2PC≡CP(C6F5)2, (C6F5)2PC≡CCH3, (C6F5)2PC≡CC6H5, (C6H5)2PC≡CP[N-(C2H5)2]2, the mixed arsine–phosphine (C6H5)2PC≡CAs(C6H5)2 and the arsino acetylene (C6H5)2AsC≡CCF3, are reported.

Metallochain Cluster Complexes and Metallomacrocyclic Triangles Based on Coordination Bonds between Palladium or Platinum and Diphosphinoacetylene Ligands

“…Solvents were dried over appropriate drying agents and then distilled or they were obtained by the Grubbs method. [45] Phenylethynyl(diphenyl)phosphine (1), [46] [MCl 2 (PPh 2 CCPh) 2 ] (3: M Pd, [23] 4: M Pt [24] ) and p-Bis(diphenylphosphinoethynyl)benzene (11) [47] were prepared according to literature procedures. KI and [Fe 2 (CO) 9 ] were purchased from Aldrich and used as received.…”

Formation of Diphenylphosphanylbutadienyl Complexes by Insertion of Two P-Coordinated Alkynylphosphanes into a PtbC6F5 Bond: Detection of Intermediate and Reaction Products

“…The spectroscopic instrumentation employed has been previously reported. [20a] PPh 2 CCR (R Ph, [47] tBu, [47] Tol [48] ), cis-[Pt(C 6 F 5 ) 2 (tht) 2 ], [49] (NBu 4 ) 2 [Pd(m-Br)(C 6 F 5 ) 2 ] 2 , [49] and cis-[Pt(C 6 F 5 ) 2 (thf) 2 ] 1 [50] were prepared according to literature methods. The synthesis of complexes 2 a, 2 b, 3 a, 3 b, 6 a, and 7 a as well as 10 a ± 12 a, 13 a, and 14 a was reported as supporting information, [12] and is therefore not included in this work.…”

Fluoroalkenyl, fluoroalkynyl and fluoroalkyl phosphines

“…In 1952 Henne and Nager reported the preparation of the Grignard reagent EtMg(tfp), derived from the metathesis of F 3 CCCH and EtMgBr [45], whilst in 1971 Carty et al obtained the lithium alkynyl reagent by deprotonation of 3,3,3-trifluoropropyne [46]. More recently, because of difficulties in obtaining CF 3 CCH a number of alternative routes have been proposed.…”