A rational step-by-step preparation of a chlorin from linear tetrapyrroles
作者:Dennis H. Burns、Tim M. Caldwell、Michael W. Burden
DOI:10.1016/s0040-4039(00)60471-9
日期:1993.4
Formation of porphodimethene 2 by condensation of pyrromethanes 3 and 4, metalation with Zn(OAc)2 under neutral conditions and heating to 55°C for 1 hour in chloroform produces chlorin 5 in 27% yield.