Porphyrins with exocyclic rings. Part 10. Synthesis of meso,β-propanoporphyrins from 4,5,6,7-tetrahydro-1H-indoles
作者:Timothy D. Lash
DOI:10.1016/s0040-4020(97)10288-5
日期:1998.1
with diformyldipyrrylmethanes 19 under modified MacDonald “2 + 2” conditions gave good yields of meso,β-propanoporphyrins 26. This chemistry was sufficiently versatile that a porphyrin with two six-membered exocyclic rings (34) could be prepared by the same methodology. On the other hand, attempts to cyclize an a,c-biladiene 37 incorporating a six-memberedcarbocyclicring gave moderate to poor yields