Annelation of aromatic oxo compounds
โ Scribed by Sandor Karady; Joseph S Amato; Robert A Reamer; Leonard M Weinstock
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- French
- Weight
- 189 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0040-4039
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๐ SIMILAR VOLUMES
A series of bis(oxo/thioxothiazolinyl) aromatic atropisomers with two chiral C(aryl)-N(heterocycle) axes was synthesized. The separation of antiparallel, parallel diastereomers was achieved by chromatography on silica. Conformational assignment for the bis-thione atropisomers 1a,b-4a,b and bisone at
for the preparation of unsynunetrical biphenyls by elaboration of aromatic ketones is described. The formation of cyclic products from acyclic precursors is an important objective in organic synthesis. --. (e) M. Guyot and C. kntzer, Bull. Sot Chim Fr -\_. \_\* -.) 1843 (1967); m.p. 102'C.