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Formation of Novel Photodimers from 4-Aryl-1,4-dihydropyridines

✍ Scribed by Andreas Hilgeroth; Ute Baumeister


Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
129 KB
Volume
7
Category
Article
ISSN
0947-6539

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On irradiation at Ξ» Υ† 270 nm solutions of 4-aryl-1,4-Irradiation with filtered light (Ξ» ΟΎ 313 nm) leads to syn and anti dimers 4 and 3 in nearly equal yields. The poor yields of dihydropyridines 1 yield cage dimers 2 as the main products beside small amounts of anti dimers 3. 1 H-NMR data and X-anti

ChemInform Abstract: Novel Solid-State S
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Novel Solid-State Synthesis of Dimeric 4-Aryl-1,4-dihydropyridines. -On irradiation in the solid state, 4-aryldihydropyridines (I) and (IV) undergo [2 + 2] cycloaddition to centrosymmetric head-to-tail dimers (II) and (V), respectively. Further irradiation of the dimers (II) provides the cage dimers