71128-85-3Relevant academic research and scientific papers
Stepwise Construction of Some Hexahomooxacalix[3]arenes and Their Conformations in Solid State
Tsubaki, Kazunori,Otsubo, Tadamune,Tanaka, Kiyoshi,Fuji, Kaoru,Kinoshita, Takayoshi
, p. 3260 - 3265 (2007/10/03)
Hexahomooxacalix[3]arenes 1 bearing different substituents on their upper rim were synthesized from the corresponding linear trimers 2 by the acid-catalyzed cyclization. The X-ray crystallographic analyses of 1 (R1 = R3 = H, R2 = t-Bu, and R1 = Et, R2 = t-Bu, R3 = i-Pr) revealed that they adopt a cone conformation, owing to an intramolecular hydrogen-bonded network in the solid state.
