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Upstream product

• 124006-37-7 5,11,17,23-tetrakis(chloromethyl)pentacyclo[19.3.1.1(3,7).1(9,13).1(15,19)]octacosa-1⁽²⁵⁾,3⁽²⁸⁾,4,6,9⁽²⁷⁾,10,12,15⁽²⁶⁾,16,18,21,23-dodecaene-25,26,27,28-tetrol 
• 108-67-8 1,3,5-trimethyl-benzene 

Relevant academic research and scientific papers

Extension of the hydrophobic cavity of calix[4]arene by 'upper rim' functionalization

The hydrophobic cavity of calix[4]arene (1) has been extended by 'upper rim' functionalization with different alkyl groups. Using p-chloromethylcalix[4]arene (2) as the intermediate, the synthesis of ethyl (4) and p-benzylcalix[4]arenes (5 a-c) was performed. By reaction of 1 with cyclohexene p-cyclohexylcalix[4]arene (6) was obtained. The crystal structure of p-ethylcalix[4]arene (4) was solved.