The transition-metal-free synthesis of unsymmetrical and highly functionalized triarylmethanes through arylation of the situ generated o-QMs from diarylmethyl p-tolyl sulfones with aryl zinc reagents is described. Alkyl zinc reagents are also well tolerated in this reaction. Additionally, the straightforward synthesis of the analogue of the antituberculosis agent A and the key precursor of the anti-breast-cancer
2-Naphthol underwent Friedel-Crafts reaction with N-benzyloxycarbonylamino sulfones in the presence of InCl3 at room temperature to form the corresponding sulfonyl derivatives in high yields. The products were subsequently reacted with nucleophiles such as allyltributyltin and anisole to replace the sulfonyl group.
Treatment of 2-naphthol with aldehydes and allyl tributyl stannane or anisole in the presence of AlCl3 at 0A degrees C to room temperature afforded its 1-alkyl derivatives in high yields (76-83%) within 4-8 h. The products were evaluated for their cytotoxic activity against four human cancer cell lines. The most potent compound (5d) showed IC50 of 1.2 +/- A 1.1, 1.6 +/- A 1.0, 0.9 +/- A 0.1, and 0.8 +/- A 0.4 mu M against Hep G(2), A549, MDA 231, and HeLa cell lines, respectively, and its activity was found to be comparable to that of doxorubicin.A new multicomponent synthesis of 2-naphthol derivatives has been developed. The cytotoxic activity of one of the 2-naphthol derivatives (A:R = 4-F-C6H5) was comparable to that of doxorubicin.