Synthesis and conformational studies of tetrahydroxy[3.1.3.1]metacyclophanes and electrophilic aromatic substitution of their tetramethoxy derivatives

Synthesis and ion selectivity of conformers of tetraalkyl esters derived from 9,16,25,32-tetrahydroxy[3.1.3.1]metacyclophane

“…Found : C,73.20 ;H,8.39. 6,13,22,16,25, 6,13,22,16,25, 2867, 1757, 1725(CxO), 1478, 1435, 1418, 1366, 1228, 1194, 1157and 11261.26 (36H, s) Typical procedure. A mixture of 1 (400 mg, 0.57 mmol) and sodium carbonate (1.…”

Synthesis and Structural Properties of Novel Calixarene Analogues having Schiff Base Units

“…Synthesis of 1,3-bis(5-tert-butyl-2-hydroxyphenyl)propane 1 was carried out according to the reported procedure. 9 Preparation of 1, 3-bis(5-tert-butyl-3-formyl-2-hydroxyphenyl) propane (2): To a solution of 1,3-bis(5-tert-butyl-2-hydroxyphenyl) propane 1 (1.0 g, 2.94 mmol) in CF 3 COOH (10 cm 3 ) was added a hexamethylenetetramine (1.03 g, 7.34 mmol) and stirred for 24 h at 90°C. Then a reaction mixture was cooled and poured into 10% HCl aqueous solution.…”

Crystal Structures of Uranyl Ion Complexes of Tetrahydroxy[3.1.3.1]metacyclophane (Homocalix[4]arene)

“…The tetrahydroxy[3.1.3.1]metacyclophanes L 1 H 4 and L 2 H 4 were synthesized as previously reported [12,13]. ISSN (20 mL) was added dropwise, resulting in an orange solution which was refluxed for 5 min, then allowed to cool down, yielding orange single crystals suitable for X-ray crystallography after about 48 h.…”