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Titolo:
Highly strained C-C bonds: 3-(1 '-hydroxy-4 '-isopropyl-2 ',2 '-dimethyl-1',2 '-dihydrobenzocyclobuten-1 '-yl)-3-methyl-2-butanone ethylene acetal, (I), and (3S*,1 ' S*)-3-Acetoxy-2-(1 '-hydroxy-1 ',2 '-dihydrobenzocyciobuten-1 '-yl)-2-methylpentane, (II)
Autore:
Iida, K; Kawata, E; Kumada, K; Saito, M; Kumakura, S; Yoshioka, M;
Indirizzi:
Saitama Univ, Fac Sci, Dept Chem, Urawa, Saitama 338, Japan Saitama Univ Urawa Saitama Japan 338 Dept Chem, Urawa, Saitama 338, Japan
Titolo Testata:
ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS
, volume: 54, anno: 1998,
parte:, 12
pagine: 1938 - 1941
SICI:
0108-2701(199812)54:<1938:HSCB3'>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
DEFORMATION ELECTRON-DENSITIES; BRONCHOSPASMOLYTIC AGENTS; PHOTOCHEMICAL CYCLIZATION; SINGLE BONDS; PRODUCTS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Iida, K Saitama Univ, Fac Sci, Dept Chem, Urawa, Saitama 338, Japan Saitama Univ Urawa Saitama Japan 338 m, Urawa, Saitama 338, Japan
Citazione:
K. Iida et al., "Highly strained C-C bonds: 3-(1 '-hydroxy-4 '-isopropyl-2 ',2 '-dimethyl-1',2 '-dihydrobenzocyclobuten-1 '-yl)-3-methyl-2-butanone ethylene acetal, (I), and (3S*,1 ' S*)-3-Acetoxy-2-(1 '-hydroxy-1 ',2 '-dihydrobenzocyciobuten-1 '-yl)-2-methylpentane, (II)", ACT CRYST C, 54, 1998, pp. 1938-1941

Abstract

The crystal structures of the title compounds, C20H30O3 tl, and C16H22O3 (II), are described. The benzocyclobutene rings in (I) and (II) are approximately planar. The lengths of the Csp(3)-Csp(3) bonds in the cyclobutene rings of (I) and (II) are 1.659 (2) and 1.596(2) Angstrom, respectively, The C-C bond elongation observed in (I) may be ascribed to steric congestion and/or electronic effects on the bond exerted by the methyl groups and the alkyl side chain attached to the cyclobutenol moiety, together with a ring strain expected for a four-membered ring system.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/11/20 alle ore 16:02:46