Diphenyl dichloro ruthenium

Dichloro(3,3-diphenyl-2-propenylidene)-6 s-(triphenylphosphine)-ruthenium (compound 22) ... 

The first example is the synthesis of pellitorine (152) (Scheme 42), a naturally occurring pesticide58. The terminal double bond in 149 is hydrogenated selectively using dichloro-tris-(triphenylphosphine)-ruthenium(II) as a catalyst. Partial hydrolysis affords the potassium salt of the monoester 150 which is treated with diphenyl diselenide to displace one of the carboxyl groups by the phenylselenenyl group. Oxidative removal of this group leads to 2,4-decadienoate (151) which is converted to pellitorine (152). 

The asymmetric catalytic hydrogenation of 2-(6 -methoxy-2 -naphthyl)propenoic acid to (S)-naproxen was monitored in both methanol- and C02-expanded methanol.f The catalyst used was [dichloro-(S)-(-)-2,2 -bis(diphenyl-phosphino)-1, l -binapthyl]ruthenium(II). Addition of CO2 to the methanol produced strong retardation of the reaction rate. An average reduction in enantioselectivity of 6%i was observed compared to that in methanol. The enantioselectivity was found to increase as the temperature decreased in both neat methanol and C02-expanded methanol systems, indicating that the underlying mechanisms were similar. Insufficient oxygen removal may have prevented the... 

N4C32H22, Porphyrin, 5,15-diphenyl-, 33 60 N4CI2O8RUC24H16, Ruthenium(ll), dichloro-bis(4,4 -dicarboxy-2,2 -bipyridine)-, cis-, 33 185... 

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