| Autor: |
Kotha S; Department of Chemistry, Indian Institute of Technology-Bombay, Powai, Mumbai 400 076, India., Seema V; Department of Chemistry, Indian Institute of Technology-Bombay, Powai, Mumbai 400 076, India., Deodhar D; Department of Chemistry, Indian Institute of Technology-Bombay, Powai, Mumbai 400 076, India., Shaikh M; Department of Chemistry, Indian Institute of Technology-Bombay, Powai, Mumbai 400 076, India. |
| Jazyk: |
angličtina |
| Zdroj: |
Acta crystallographica. Section E, Structure reports online [Acta Crystallogr Sect E Struct Rep Online] 2014 Oct 24; Vol. 70 (Pt 11), pp. 410-4. Date of Electronic Publication: 2014 Oct 24 (Print Publication: 2014). |
| DOI: |
10.1107/S1600536814023149 |
| Abstrakt: |
The title compounds, C17H20O2 (1) and C17H18O2 (2), are allyl-ated caged compounds. In (1), the carbon atoms bearing the allyl groups are far apart [2.9417 (17) Å], hence the expected ring-closing metathesis (RCM) protocol failed to give a ring-closing product. When these carbon atoms are connected by a C-C bond as in (2), the distance between them is much smaller [1.611 (3) Å] and consequently the RCM process was successful. The caged carbon skeleton of (1) can be described as a fusion of four five-membered rings and one six-membered ring. All four five-membered rings exhibit envelope conformations. The structure of compound (2) consists of four five-membered rings, of which two are cyclo-penta-none rings bonded at the 2, 4 and 5 positions and linked at the 3-carbons by a methyl-ene bridge. It also consists of one four-membered and two six-membered rings. All four five-membered rings adopt envelope conformations. In the crystal of (1), mol-ecules are linked via C-H⋯O hydrogen bonds, forming sheets lying parallel to (010). In the crystal of (2), mol-ecules are linked via C-H⋯O hydrogen bonds forming chains along [100]. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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