Hk. Hombrecher et al., PHOTOINDUCED REACTION OF 2-DIAZO-3-OXO-5,10,15,20-TETRAPHENYLCHLORINSWITH ALCOHOLS, Heterocyclic communications, 3(5), 1997, pp. 453-460
The photochemical induced reaction of metallo 2-diazo-3-oxo-5,10,15,20
-tetraphenylchlorins <(1a)under bar> and <(1b)under bar> with alcohols
is described. Photochemical dediazoniation in presence of simple alco
hols leads to the formation of 2-alkyloxy-5,10,15,20-tetraphenylporphy
rins <(2a)under bar> - <(2f)under bar> 2-hydroxy-5,10,15,20-tetrapheny
lporphyrins <(3a)under bar> - <(3b)under bar>. 2-alkyloxy-3-oxo-5,10,1
5,20-tetraphenylchlorins <(4a)under bar> - <(4f)under bar> and ,2-dial
kyloxy-3-oxo-5,10,15,20-tetraphenylchlorins <(5a)under bar> - <(5f)und
er bar>. The product distribution strongly depends upon the central me
tal ion of the irradiated diazoketones <(1a)under bar> and <(1b)under
bar>.