Results 21 to 30 of about 3,857 (276)
, 2016 UV irradiation of the powdered crystalline sample of each of three (E,E)-1,4-di(trifluoromethyl-substituted)phenyl-1,3-butadienes (1−3) was found to yield a single [2 + 2] cycloaddition product in the solid state.
Jin Liu (1235427) +2 more
core +6 more sources
Synthesis of (Thio)substituted -1,3-Butadienes and -Butenynes
Journal of the Turkish Chemical Society, Section A: Chemistry, 2019 In this study, 2H-1,1,3,4,4-pentachloro-1,3-butadiene (1) reacted with different thiols (2-Methyl-2-propanethiol 2a, Benzyl mercaptan 2b, 4-tert-butylbenzenethiol 2c, 4-Nitrothiophenol 2d) in ethanol in the presence of NaOH to afford mono-thio ...
Ayşecik Kaçmaz
doaj +1 more source
NHeterocyclic Carbene Stabilized 1Bora-1,3-butadienes
, 2021 Deprotonation of [(NHC)(Fmes)B-allyl]+ borenium cations (NHC, IMes (a) or IMe2 (b); Fmes, 2,4,6-(CF3)3C6H2) provides an easy entry to the NHC-stabilized 1-bora-1,3-butadienes. They feature a planar s-trans-conformation just like 1,3-butadiene.
Gerhard Erker +7 more
core +1 more source
New Piperazine Derivatives Synthesized from Thio-Substituted Polyhalogeno-2-nitro-1,3-butadienes
E-Journal of Chemistry, 2010 It is known that polyhalogeno-nitro-1,3-butadienes are important starting materials for the synthesis of polyfunctionalized bioactive heterocycles.
S. Goksin Aydinli, Cemil Ibis
doaj +1 more source
In vitro and in vivo mutagenicity of the butadiene metabolites butadiene diolepoxide, butadiene monoepoxide and diepoxybutane [PDF]
Mutagenesis, 1997 Three metabolites of 1,3-butadiene, namely butadiene diolepoxide, butadiene monoepoxide and diepoxybutane, were tested in the bacterial mutation assay using Salmonella typhimurium strain TA100 with and without metabolic activation (S9 mix). All three compounds showed a mutagenic response. The bifunctional epoxide was more effective than the diolepoxide
I D, Adler +3 more
openaire +2 more sources
Sequential Transformations of 1,3-Dibora Butadienes to Enones or Tetrasubstituted 1,3-Butadienes
, 2016 Sequential Transformations of 1,3-Dibora Butadienes to Enones or Tetrasubstituted 1,3 ...
Guillaume Desurmont (3038538) +3 more
core +1 more source
4-Bromo-2H-1,3-oxazine-2,6(3H)-dione
Acta Crystallographica Section E, 2009 The title compound, C4H2BrNO3, is one of a series of three substituted oxauracils prepared as precursors in the preparation of 1-aza-1,3-butadienes. Although each structure has identical potential for N—H...O intermolecular hydrogen bonds, each
Damon Parrish +3 more
doaj +1 more source
Racemic and Asymmetric Diels−Alder Reactions of 1-(2-Oxazolidinon-3-yl)-3-siloxy-1,3-butadienes
, 2016 Achiral and chiral 1-(2-oxazolidinon-3-yl)-3-siloxy-1,3-butadienes were prepared from readily available starting materials. Although more stable than the parent 1-amino-3-siloxy dienes, the 1-(2-oxazolidinon-3-yl)-3-siloxy-1,3-butadienes are still very ...
Jacob M. Janey (1831201) +3 more
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Broadly Effective Enantioselective Diels−Alder Reactions of 1-Amino-substituted-1,3-butadienes
, 2016 A broad range of substituted 1-amino-1,3-butadienes undergo enantioselective Diels−Alder reactions with methacrolein in the presence of 5 mol % of Cr(III)-salen complex 1.
Tetsuo Iwama (2145706) +2 more
core +1 more source
, 2016 The preparation and thermolysis of new stable heterocyclic precursors of 1,2-diaza-1,3-butadienes is described. The resulting reactive diazadienes are trapped in situ with N-phenyldiazamaleimide.
Jessica E. Reed (2723554) +2 more
core +1 more source