272116-03-7Relevant articles and documents
Heterocalixarenes Part 3: Bis-oxo-bridged calix[1]cyclicurea[3]arene and calix[1]cyclicurea[1]pyridine[2]arenes. Synthesis, X-ray crystal structure and conformational analysis
Kumar, Subodh,Paul, Dharam,Hundal, Geeta,Hundal, Maninder Singh,Singh, Harjit
, p. 1037 - 1043 (2000)
The Friedel-Crafts aroylations of 2- and 4-methylanisole with isophthaloyl dichloride or pyridine-2,6-dicarbonyl dichloride provide respective diones, which on bromination with NBS provide corresponding bisbromomethyl derivatives that undergo simple cyclo