38253-64-4Relevant academic research and scientific papers
Synthesis and structural elucidation of novel camphor-derived thioureas
Groselj, Uros,Golobic, Amalija,Stare, Katarina,Svete, Jurij,Stanovnik, Branko
, p. 307 - 317 (2012/06/18)
Nine novel (+)-camphor-derived thioureas have been prepared. 3-((Dimethylamino)methylene)camphor (2) served as the common precursor for the preparation of both, 2-thiourea 15-20 and 3-thiourea functionalized camphor derivatives 6, 7/7′, respectively. Starting from 2, the latter were prepared in two or three steps whereas the former in five steps, respectively. Configuration of all novel compounds has been meticulously determined using NMR techniques and/or single crystal X-ray crystallography. Copyright
Synthesis and structural characterization of novel camphor-derived amines
Groselj, Uros,Sevsek, Alen,Ricko, Sebastijan,Golobic, Amalija,Svete, Jurij,Stanovnik, Branko
, p. 778 - 788,11 (2020/08/20)
Two novel 4-substituted camphidine derivatives 10a,b have been prepared from (+)-camphor (1) in five steps, the Beckmann rearrangement being the bottleneck of the synthesis. Isoborneol derivative 5b, formed as a side product during the hydrogenation of arylidene ketone 3b, under Beckmann rearrangement conditions yielded interesting novel rearrangement products 11 and 12. (1S)-(+)-Camphorquinone (13) was transformed into diamines 15 and 16 in two steps, the former being cyclized into an imidazoline salt 17, an N-heterocyclic carbene precursor. The structures of all novel compounds have been meticulously characterized using NMR techniques and/or single crystal X-ray analysis. Copyright
THE OCTANT RULE XXIII. ANTIOCTANT EFFECTS IN γ,δ-UNSATURATED KETONES
Toan, Vien Van,Lightner, David A.
, p. 5769 - 5774 (2007/10/02)
The exo and endo α-benzyl derivatives (1 and 2. respectively) of (+)-camphor have been synthesized and are found to exert a strong influence on the circular dichroism n?* Cotton effects: 1: Δε301max -0.36 (n-heptane) and 2: Δε302max +3.22, relative to camphor: Δε304max + 1.8 (n-heptane).Evidence for electric dipole transition moment coupling in these γ,δ-unsaturated systems is found in the n?* UV: 1: ε291max 84 (n-heptane) and 2: ε285max 303, relative to camphor: ε290max 25.
