| Literature DB >> 16706495 |
H M Chawla1, N Pant, Bindu Srivastava, Shailesh Upreti.
Abstract
[reaction: see text] A facile synthesis of bisformylated calix[4]arenes via ipso substitution of p-tert-butylcalix[4]arenes through treatment with hexamethylenetetramine/trifluoroacetic acid is described. Under identical conditions, p-tert-butylcalix[4]arene tetramethyl ether 4 gives proximally substituted bisformylated derivative 4a in a pinched cone conformation.Entities:
Year: 2006 PMID： 16706495 DOI： 10.1021/ol0605124
Source DB: PubMed Journal: Org Lett ISSN： 1523-7052 Impact factor: 6.005