Synthetic Route of 32993-05-8, Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn’t involve a screen. 32993-05-8, C41H35ClP2Ru. A document type is Article, introducing its new discovery.
Reactions of the racemic iron diallyl sulfide complex [(eta5-C5H5)Fe(CO)(PPh3)(S(CH 2-CH=CH2)2)]+BF4 – and t-BuOK (CH2Cl2 or THF, -80 to -60C) give the thiolate complex (eta5-C5H5)Fe(CO)(PPh 3)(SCH(CH=CH2)CH2CH=CH2) (65-92%) as 77-68:23-32 mixtures of SS,RR/SR,RS Fe,SC diastereomers. Reactions of the enantiomerically pure ruthenium diallyl sulfide complexes [(eta5-C5H5)Ru(S,S-chiraphos)(S(CH 2CR=CH2)2)]+PF6 – (5+PF6-; R = a, H; R = b, CH3) and t-BuOK (CH2Cl2, -98C) give the thiolate complexes (eta5-C5H5)Ru(S,S-chiraphos)(SCH(CR=CH 2)CH2CR=CH2) as 78:22 (8a, >99%) and 87:13 (8b, 97%) mixtures of chromatographically separable SSS/SSR PC,P?C?,SC diastereomers. These transformations likely involve intermediate sulfur ylides as described in the title. Reactions of 8a,b with CH3I or PhCH2I and then NaI (acetone, reflux) give, via cationic methyl or benzyl sulfide complexes, enantiomerically enriched R?SCH(CH2CR=CH2)CR=CH2 (R/R? = H/CH3, 75%; CH3/CH3, 71%; H/PhCH2 and CH3/PhCH2, >99%) and (eta5-C5H5)Ru(S,S-chiraphos)(I) (6, ?97%). Complex 6 is readily recycled to enantiomerically pure 5a,b+PF6- (NH4+PF6-, CH3OH, S(CH2CR=CH2)2; 94-97%).
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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI