107643-23-2Relevant articles and documents
SYNTHESIS AND STEREOCHEMISTRY OF FLUORENE-9 AND BENZOFLUORENE-11-SPIRO-5'-DIOXANES
Hahn, Witold E.,Sokolowska, Alicja
, p. 781 - 786 (2007/10/02)
Fluorene-9 and benzofluorene-11-spiro-5'-dioxanes were obtained by treating 9,9-bis(hydroxymethyl)fluorene or 11,11-bis(hydroxymethyl)-11H-benzofluorene with aromatic aldehydes.The influence of aromatic system in position 5 and aryl in position 2 on chemical shifts of protons in 1,3-dioxane ring were determined by means of 1H NMR spectra.Dioxanes, derivatives of benzofluorene were obtained in the form of a mixture of cis and trans isomers from which cis isomers were isolated in the pure form.