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  • An efficient solvent-free synthesis of benzoxanthenes catalyzed by BSA or O-TSA.

An efficient solvent-free synthesis of benzoxanthenes catalyzed by BSA or O-TSA.

Preparative biochemistry & biotechnology (2008-06-24)
G Luo, D Liu, C Liu
ABSTRACT

A series of 14-alkyl and aryl-14H-dibenzo[a.j]xanthenes have been synthesized with high yields through a one-pot condensation of beta-naphthol with alkyl or aryl aldehydes in the presence of BSA or o-TSA in a solvent-free medium.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
p-Toluenesulfonamide, reagent grade, 97%
Sigma-Aldrich
p-Toluenesulfonamide, ReagentPlus®, ≥99%