204689-69-0Relevant academic research and scientific papers
Synthesis of optically active 2-methylchroman derivatives and application to chiral dopants for nematic liquid crystals
Shitara, Hiroaki,Aoki, Yoshio,Hirose, Takuji,Nohira, Hiroyuki
, p. 259 - 265 (2000)
Chiral 2-methylchroman-2-carboxylic acid derivatives were prepared as new chiral dopants for nematic liquid crystals. The starting material, optically active 6-benzyloxy-2-methylchroman-2-carboxylic acid, was newly synthesized as a rigid core structure and resolved by a diastereomeric salt formation method. Its absolute configuration was determined by comparing its circular dichroism spectrum with that of the commercially available (S)-6- hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid derivative. The helical twisting power of the new dopants was determined and the relationship between their functional groups and flexible terminal structures was studied.
