9-Bromo-9-borafluorene
نویسندگان
چکیده
The title compound, C(12)H(8)BBr, crystallizes with three essentially planar mol-ecules (r.m.s. deviations = 0.018, 0.020 and 0.021Å) in the asymmetric unit: since the title compound is rigid, there are no conformational differences between these three mol-ecules. The crystal packing resembles a herringbone pattern.
منابع مشابه
Rearrangement from the heteroantiaromatic borole to the heteroaromatic azaborine motif.
Treatment of 9-chloro-9-borafluorene with N,O-bis(trimethylsilyl)hydroxylamine results in 10-trimethylsilyloxy-9-aza-10-boraphenanthrene 6b. NMR spectroscopy shows that the expected antiaromatic 9-(trimethylsilyloxyamino)-9-borafluorene 5b rearranges to the formally aromatic phenanthrene 6b at room temperature.
متن کامل9-H-9-Borafluorene dimethyl sulfide adduct: a product of a unique ring-contraction reaction and a useful hydroboration reagent.
The dimethyl sulfide adduct 2(DMS) is a crystalline storage form of the unstable hydroboration reagent 9-H-9-borafluorene (2); 2(DMS) is available by the addition of DMS to either in situ generated [2](2) or 1,2-(2,2'-biphenylylene)diborane(6) (7).
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Seven parguerane diterpenes: 15-bromo-2,7,19-triacetoxyparguer-9(11)-en-16-ol (1), 15-bromo-2,7,16,19-tetraacetoxyparguer-9(11)-ene (2), 15-bromo-2,19-diacetoxyparguer-9(11)-en-7,16-diol (3), 15-bromo-2,16,19-triacetoxyparguer-9(11)-en-7-ol (4), 15-bromo-2,16-diacetoxyparguer-9(11)-en-7-ol (5), 15-bromoparguer-9(11)-en-16-ol (6), 15-bromoparguer-7-en-16-ol (7), two polyether triterpenes: thyrsi...
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A small library of 8-substituted 9-deazaxanthines has been prepared by late-stage diversification of an 8-bromo-9-deazaxanthine. By utilizing palladium-catalyzed cross-coupling reactions a single key precursor can be transformed into a variety of 8-substituted-9-deazaxanthine compounds. Three key 8-bromo-9-deazaxanthine intermediates were efficiently prepared from commercially available 6-chlor...
متن کامل1-[2-(4-Bromobenzyloxy)-2-phenylethyl]-1H-1,2,4-triazole
In the mol-ecule of the title compound, C(17)H(16)BrN(3)O, the triazole ring is oriented at dihedral angles of 6.14 (9)° and 82.08 (9)°, respectively, with respect to the phenyl and bromo-benzene rings. The dihedral angle between the bromo-benzene and phenyl rings is 87.28 (7)°. The intra-molecular C-H⋯O hydrogen bond results in the formation of a planar five-membered ring, which is oriented at...
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