00386nam a2200109Ia 4500008004100000022001400041040001100055100002600066245012600092260004200218300001600260251112s9999||||xx |||||||||||||| ||und||  a0040-4039  aCNCLSA  aProf. A. R. Katritzky 0aTetrahedron LettersbThe International Organ For the Rapid Publication of Preliminary Communications in Organic Chemistry  cMarch, 1975bpergamon pressaNew York  aP. 709-1524