In a continuation of this methodology, ultrathin two-dimensional porphyrin nanoplates (2DPNs) have been identified as highly efficient photocatalyst for the quantitative conversion of thiophenols and nitriles into 2-substituted benzothiazoles 99b (Scheme 34) through mechanism, which is generaly the same as previously (Scheme 33) described. Scheme 34. 2D PNs catalyzed synthesis of benzothiazoles 99b.