Four-membered ring compounds containing bis(methylene)cyclobutene or tetrakis(methylene)cyclobutane moieties. Benzocyclobutadiene, benzodicyclobutadiene, biphenylene, and related compounds
Article Abstract:
A series of cyclic compounds bearing either bis(methylene)cyclobutene or tetrakis(methylene)cyclobutane molecules were prepared and studied. Synthetic studies indicated that bond angle strain and cyclobutadiene incorporation limited the production of these compounds. Reactivity and structural determinations using H nuclear magnetic resonance, infrared and X-ray crystallographic analyses were also conducted. Results showed that despite the presence of restricting factors, these compounds underwent various reactions providing valuable reactive intermediates.
Publication Name: Chemical Reviews
Subject: Chemistry
ISSN: 0009-2665
Year: 1992
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The chemistry of diposphenes and their heavy congeners: synthesis, structure, and reactivity
Article Abstract:
The preparation of a series of diphosphenes and their derivatives was presented. Structural and reactivity studies using X-ray crystallographic and P nuclear magnetic resonance analyses were conducted to characterize the compounds. The compounds underwent various reactions which included electrophilic, nucleophili, metal complexation and cycloaddition interactions. Moreover, diarsenes and their intermediates were also synthesized utilizing similar principles.
Publication Name: Chemical Reviews
Subject: Chemistry
ISSN: 0009-2665
Year: 1992
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Heavy allenes and cumulenes E=C=E' and E=C=C=E' (E = P, As, Si, Ge, Sn; E' = C, N, P, As, O, S)
Article Abstract:
This paper discusses synthesis and characterization of low-coordinate species of group 14 and 15 elements of diphosphenes and disilenes. Research reveals that the presence of two cumulated double bonds confers special structures on the E=C=E' derivatives. Data are presented on the phosphorous derivatives of these allenic compounds with bulky groups involved in their stabilization.
Publication Name: Chemical Reviews
Subject: Chemistry
ISSN: 0009-2665
Year: 2000
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