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Reactions of [H2OS3...
Reactions of [H2OS3(CO)(10)] with conjugated diynes (RC2C2R ') containing nucleophilic oxygen in beta position of a substituent (R = Ph, R ' = CH2OH, C(O)Ph; R = R ' = CMe2(OH))
- Artikel/kapitelEngelska2003
Förlag, utgivningsår, omfång ...
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2003-07-15
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American Chemical Society (ACS),2003
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LIBRIS-ID:oai:lup.lub.lu.se:2c02b882-8ce8-41e9-bfad-7e597fb41901
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https://lup.lub.lu.se/record/128380URI
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https://doi.org/10.1021/om0304107DOI
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Språk:engelska
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Sammanfattning på:engelska
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Reactions of [H2Os3(CO)10] with a series of diynes, RC2C2R' (1: R = Ph, R' = CH2OH; 2: R = Ph, R' = C(O)Ph; 3: R = R' = C(OH)Me2), have been studied. It was found that upon coordination to the triosmium cluster, the nucleophilic oxygens of the R' substituents of 1 and 2 take part in intramolecular cyclization reactions to give [HOs3(CO)10{-1:2-PhCH2(C=CH-C=CH-O)}] (5) and [HOs3(CO)10{-1:1-Ph(C=CH-C=C-O)CPh}] (6), respectively, both of which contain furan rings coordinated to the cluster core. On heating of the latter compound, the furan moiety remains intact, but a carbonyl group dissociates from the cluster, leading to the formation of [HOs3(CO)9(3-1:3:1-Ph(C=CH-C=C-O)CPh)] (7) with a closed "C3Os3" pentagonal pyramidal structure. Reaction of [H2Os3(CO)10] with 3 does not lead to cyclization of the diyne; instead, the clusters [Os3(CO)10{3-2-(RCH=CH-C2R)}] (8) and [Os3(CO)10{3-2-(RC2C2R)}] (9) are formed. Deuterium labeling of the starting compounds has been used in the reaction of [H2Os3(CO)10] with HOCH2C2C2CH2OH in order to investigate possible mechanisms of the cyclization reaction. The crystal and molecular structures of clusters 5, 7, and 9 are presented.
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Biuppslag (personer, institutioner, konferenser, titlar ...)
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Khripun, V D
(författare)
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Balova, I A
(författare)
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Borovitov, M E
(författare)
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Domnin, I N
(författare)
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Nordlander, EbbeLund University,Lunds universitet,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)ook1-eno
(författare)
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Haukka, M
(författare)
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Pakkanen, T A
(författare)
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Farrar, D H
(författare)
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Kemiska institutionenInstitutioner vid LTH
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Organometallics: American Chemical Society (ACS)22:17, s. 3455-34651520-60410276-7333
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