Synlett 1993; 1993(8): 571-572
DOI: 10.1055/s-1993-22532
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Concave Reagents 13[1]. 2′-Substituted m-Terphenyls as Building Blocks. Synthesis of a Concave Thiol Acetate

Ulrich Lüning* , Heiko Baumgartner
  • *Chemisches Laboratorium, Albertstraße 21, D-79104 Freiburg, Germany
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19. März 2002 (online)

New sterically highly hindered 2′-substituted 2,2″, 6,6″-tetramethyl-m-terphenyls 1 were synthesized. Lithiation of the 2′-iodide 1b and subsequent reaction with electrophiles gave new m-terphenyls 1f - 1j, group transformations gave 1k - 1p. The thiol acetate 1o could be tetra-functionalized and doubly bridged to form a bimacrocyclic concave thiol acetate 3.