Reactions of trialkylalanes AlR 3 (R = Me, Et, tBu) and triorganylbismuthanes BiRะ 3 (Rะ = iPr, SiMe 3 ) were performed and the products investigated both in solution and in the solid state. Et 3 Al-Bi(SiMe 3 ) 3 (2), tBu 3 Al-Bi(SiMe 3 ) 3 (3), and tBu 3 Al-Bi(iPr) 3 ( 6) are stable Lewis acid-base
Cycloaddition of substituted spiroepoxycyclohexa-2,4-dienones: synthesis and X-ray crystal structure of the adducts
โ Scribed by Vishwakarma Singh; Dilip K. Tosh; Vinayak V. Kane; Ludger Ernst; Peter G. Jones
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- French
- Weight
- 107 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0040-4039
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โฆ Synopsis
The syntheses of the tricyclic ketoepoxides 1 and 2 from the readily available aromatic precursors 5 and 6 via cycloaddition of the spiroepoxycyclohexa-2,4-dienones 3 and 4 are described. The crystal structures of 1 and 2 were determined.
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Synthesis and X-Ray Crystal Structure of K 4 PbTe 3 โข2(en). -The single crystal XRD of (III) (space group P1, Z = 2) shows a structure similar to Pb 2 Te 2-3 , but with one of the Pb atoms absent. The trigonal pyramidal PbTe 4-3 anions and four of the five crystallographically distinct K atoms form
Among several reasons for mechanistic interest in cycloaddition reactions of cyclooctatetraeneiron tricarbonyl (A) and related M(C0)3 complexes is the expectancy that interesting modification of reactivity in the "non-bonded" 1,3-diene moiety' might arise as a consequence