Liquid crystalline behavior of tetraaryl derivatives of benzo[c]cinnoline, tetraazapyrene, phenanthrene, and pyrene: the effect of heteroatom and substitution pattern on phase stability
Synthesis of 1,3,6,8-Tetrabromophenanthrene via a Stoichiometric Ullmann Reaction
摘要:
1,3,6,8-Tetrabromophenantherene (1) is prepared in four steps from 2,4,6-tribromobenzoic acid (4) in an overall yield of 12%. The key transformation used in the synthesis is a stoichiomteric Ullmann reaction.