5226-71-1Relevant academic research and scientific papers
Rational synthesis of multicyclic bis[2]catenanes
Bogdan, Anca,Vysotsky, Myroslav O.,Ikai, Tomoyuki,Okamoto, Yoshio,Boehmer, Volker
, p. 3324 - 3330 (2004)
Bis-loop tetraurea calix[4]arene 6 has been prepared by acylation of the wide-rim calix[4]arene tetraamine 1 with the activated bis(urethane) 8 under dilution conditions. Similarly the bis(Boc-protected) tetraamine 2 is converted into the mono-loop deriva
Dipole Moments and UV Spectra of some Long-chain Molecules
Baliah, V.,Aparajithan, K.
, p. 255 - 259 (2007/10/02)
About one hundred compounds with long-chain molecular structure have been prepared (most of them are new).The dipole moments of four α,ω-bis(p-methoxyphenylthio)alkanes and five α,ω-bis(p-methoxyphenylsulphonyl)alkanes have been determined to find the effect of chain-length.In the case of sulphones, the observed values are compared with the values calculated for free rotation around all bonds intervening the end dipoles.The uv spectra of some 1,2-(distyrylsulphonyl)ethanes, and a number of α,ω-bis(arylsulphonyl)- and α,ω-bis(aryloxy)alkanes have been recorded to examine the applicability of the principle of chromophore additivity.
