00411nam a2200121Ia 4500008004100000022001400041040001100055100002600066245012600092260004500218300001700263300000900280251112s9999||||xx |||||||||||||| ||und||  a0040-4039  aCNCLSA  aProf. A. R. Katritzky 0aTetrahedron LettersbThe International Organ For the Rapid Publication of Preliminary Communications in Organic Chemistry  cNovember, 1974bpergamon pressaNew York  aP. 3905-4552  bV.78