A one-pot synthesis of cyclic carbodiimides which involves reaction of C,C-bis(aryliminophosphoranes) connected by aliphatic bridges with Boc(2)O in the presence of DMAP is described. The method is also applicable when a heteroatom such as oxygen or nitrogen is incorporated into the tether connecting the two aromatic rings. A conformation study has been carried out on carbodiimide 23a, which posseses a central nine-membered ring, using H-1 NMR spectroscopy and semiempirical as well as molecular mechanics calculations.
Glinka, Ryszard; Idowski, Pawel; Zyner, Elzbieta, Polish Journal of Chemistry, 1988, vol. 62, # 4-6, p. 539 - 542
作者:Glinka, Ryszard、Idowski, Pawel、Zyner, Elzbieta
DOI:——
日期:——
Brzezinska, Elzbieta; Glinka, Ryszard, Acta poloniae pharmaceutica, 2002, vol. 59, # 5, p. 379 - 386