76756-20-2Relevant academic research and scientific papers
PREPARATION OF (-)-(M)-PARACYCLOPHANO-HEXAHELICENE FROM (-)-(M)-1,4-DIMETHYLHEXAHELICENE AND ABSOLUTE CONFIGURATION OF 4-SUBSTITUTED PARACYCLOPHANES
Nakazaki, Masao,Yamamoto, Koji,Maeda, Miharu
, p. 1553 - 1554 (1980)
Photo-cyclization of a cis-trans mixture of the 1,2-diarylethylene precursor 1 gave 1,4-dimethylhexahelicene (2) whose levorotatory enantiomer with (M)-helicity was converted into (-)-(M)-paracyclophano-hexahelicene (7), mp 236-237 degC, (abs)sub
Preparation of (-)-(M)-Paracyclophanohexahelicene from (-)-(M)-1,4-Dimethylhexahelicene and the Absolute Configuration of 4-Substituted Paracyclophanes
Nakazaki, Masao,Yamamoto, Koji,Maeda, Miharu
, p. 1985 - 1987 (2007/10/02)
Photocyclization of a cis-trans mixture of the 1,2-diarylethylene precursor 9 gives 1,4-dimethylhexahelicene (10).The levorotatory enantiomer of 10 with M helicity is converted to (-)-(M)-paracyclophanohexahelicene (6), which confirms the R configura
