[SbN(SbCl)3(NSbCl2)(NSiMe3)2 · SbCl3], ein ungewöhnlicher Nitridoantimonkomplex mit Heterocubanstruktur

COMMUNICATIONSdroxylated with OsO,/N-methylmorpholine-N-oxide which resulted in two diols 10 and 13 in a ratio of 1 : 1 . The chiral centers of olefin 9. therefore, have no controlling influence on the dihydroxylation. The observed stereocontrol is due solely to the Sharpless dihydroxylation reagent. Diols 10 and 13 can be converted by a multiple five-membered-ring-selective Williamson reaction analogous to the reaction in Scheme 2 into the dimeric tetrahydrofuranols 11 and 14, respectively, and subsequently to the corresponding disilyl ethers 12 and 15.The enantiomerically pure alkenes 4 and 9 were prepared by standard methods (Scheme 4). The double alkylation of acetylene with bromide 1619] and the subsequent (E)-selective reduction to the olefin yielded compound 9. Reaction of two equivalents of alkyne 19 with one equivalent of dibromide 18"01 and subsequent (E)-selective reduction to the olefin yielded diene 4.The synthetic sequence of reagent-controlled, diastereoselective dihydroxylation and multiple five-membered-ring-selective Williamson reaction presented here opens up an efficient, bidirectional route to the enantiomerically pure oligo(tetrahydr0-furan)s.

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ChemInform Abstract: (SbN(SbCl)3(NSbCl2)(NSiMe3)2×SbCl3), an Unusual Nitridoantimony Complex with a Heterocubane Structure.

Rhiel

Weller

Pebler

et al. 1994

ChemInform

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[SbN(SbCl)₃(NSbCl₂)(NSiMe₃)₂ · SbCl₃], ein ungewöhnlicher Nitridoantimonkomplex mit Heterocubanstruktur

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Cited by 6 publications

References 20 publications

Der Antimon(III)/Kupfer(I)‐Komplex [{Sb₂(NCy)₄}₂Cu₄] mit einem quadratischplanaren Cu₄‐Cluster

Der Antimon(III)/Kupfer(I)‐Komplex [{Sb₂(NCy)₄}₂Cu₄] mit einem quadratischplanaren Cu₄‐Cluster

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ChemInform Abstract: (SbN(SbCl)3(NSbCl2)(NSiMe3)2×SbCl3), an Unusual Nitridoantimony Complex with a Heterocubane Structure.

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[SbN(SbCl)3(NSbCl2)(NSiMe3)2 · SbCl3], ein ungewöhnlicher Nitridoantimonkomplex mit Heterocubanstruktur

Abstract: 66 (m, lH), 4.40-4.34(m,1H).(Z)-3:6=6.33(dd,J=6.2,1.7Hz,lH),6.11(dd,J=11.7, 7.3 Hz, 1H). 5.22 ( t m , J = 8.1 Hz, 1H). 5.16 (dd, 5=11.2 Hz. l H , CH=CHC(O), Nebendiastereomer), 5.09 (dd, J = 11.8, 2.0 Hz, 1 H. CH=CHC(O). Hauptdidstereomer),4.78(td,J=10.7,4.4Hz, lH),4.73-4.68(m,IH).

Cited by 6 publications

References 20 publications

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Der Antimon(III)/Kupfer(I)‐Komplex [{Sb2(NCy)4}2Cu4] mit einem quadratischplanaren Cu4‐Cluster

[{Sb2(Ncy)4}2Cu4]: A Mixed‐Metal Antimony(III)/Copper(I) Complex Containing a Cu4 Square Plane

ChemInform Abstract: (SbN(SbCl)3(NSbCl2)(NSiMe3)2×SbCl3), an Unusual Nitridoantimony Complex with a Heterocubane Structure.

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[SbN(SbCl)₃(NSbCl₂)(NSiMe₃)₂ · SbCl₃], ein ungewöhnlicher Nitridoantimonkomplex mit Heterocubanstruktur

Der Antimon(III)/Kupfer(I)‐Komplex [{Sb₂(NCy)₄}₂Cu₄] mit einem quadratischplanaren Cu₄‐Cluster

Der Antimon(III)/Kupfer(I)‐Komplex [{Sb₂(NCy)₄}₂Cu₄] mit einem quadratischplanaren Cu₄‐Cluster

[{Sb₂(Ncy)₄}₂Cu₄]: A Mixed‐Metal Antimony(III)/Copper(I) Complex Containing a Cu₄ Square Plane