
TY  - JOUR
A1  - Clezy, PS 
A1  - Liepa, AJ 
T1  - The chemistry of pyrrolic compounds. XVI. &#946;-Electronegatively substituted dipyrrylmethines
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1971
VL  - 24
IS  - 9
SP  - 1933
EP  - 1948
KW  - 
UR  - https://doi.org/10.1071/CH9711933 
N2  - The chemistry of dipyrrylmethines bearing &#946;-electronegative substituents is reported. The presence of these electrophilic groups makes the preparation of &#945;-bromomethyl derivatives difficult and this imposes certain limitations on the type of porphyrin which can be prepared by way of these intermediates. Acetyl groups located in the 3- position readily cyclize with one of the pyrrolic nitrogen atoms to give the tricyclic pyrroloindolizine system. 
ER  -

