Abstract
trans-[( dppm) 2 ClRu C( CH 2) 3 O ] + ( 2) (dppm=Ph 2PCH 2PPh 2) and trans-[( dppm) 2 ClRu C( CH 2) 2 CH( CH) 3 O ] + ( 3) cations were obtained from the reaction of cis-[RuCl 2(dppm) 2] ( 1) with 3-butyn-1-ol and 4-pentyn-2-ol, respectively. cis-Dichlororuthenim complex [RuCl 2((dppene)(bpy)] ( 4) (dppene=Ph 2PCHCHPPh 2, bpy=2,2′-bipyridyl) also reacts with terminal alkynes e.g. 4-pentyn-2-ol and phenylacetylene to give cis- chloro-( oxycarbene)[( dppene)( bpy) ClRu C( CH 2) 2 CH( CH) 3 O ] + ( 5) and cis-chloro-(vinylidene)[(dppene)(bpy)ClRuCCHPh] + ( 6) cations. cis-[RuCl 2(bpy) 2] ( 7) also react with 4-pentyn-2-ol to give dioxacyclic carbene dication cis-[( bpy) 2 Ru( C( CH 2) 2 CH( CH) 3 O ) 2] 2+ ( 8). In the reaction of RuCl 2(PPh 3) 3 ( 9) with 3-butyn-1-ol the dimer [(PPh 3) 2ClRuC(CH 2) 3O] 2 2+ ( 10) was obtained. The new synthesis method of 1 and cis-[RuCl 2(dppm) 2]·2MeOH ( 1a) is also presented. These complexes have been fully characterized by IR, 1H, 13C{H} and 31P{H} NMR) and single crystal X-ray diffraction for 2, 3, 5 and 1a. The catalytic activity of 10 in reactions of ROMP of norbornene was also studied.
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