Efficient Solvent Free Synthesis of 12-Aryl-8,9,10,12-tetrahydrobenzo[a]-xanthen-11-ones and 3H-Spiro[isobenzofuran-1,9'-xanthen]-3-one Derivatives Using Cobalt Hydrogensulfate as a Green, Heterogeneous and Reusable Catalyst
Cobalt hydrogensulfate is an efficient catalyst for the condensation of β-naphthol, aromatic aldehydes and 5,5-dimethyl-1,3-cyclohexanedione at 120 °C to afford 9,9-dimethyl-12-phenyl-8,10,11,12-tetrahydro-9-H-benzo[a]xanthen-11-one derivatives in high yields. Also, polycondensation reactions of phenols with phthalic anhydride were carried out in the presence of cobalt hydrogensulphate under solvent-free conditions. Simple and convenient procedure, high conversion, reusability of catalyst, easy purification and short reaction time are the advantageous features of this method.
Eshghi, H., Eftekhar, M., Rahimizadeh, M., Hassanpour, M., & Bakavoli, M. (2016). Efficient Solvent Free Synthesis of 12-Aryl-8,9,10,12-tetrahydrobenzo[a]-xanthen-11-ones and 3H-Spiro[isobenzofuran-1,9'-xanthen]-3-one Derivatives Using Cobalt Hydrogensulfate as a Green, Heterogeneous and Reusable Catalyst. Organic Chemistry Research, 2(1), 20-27. doi: 10.22036/org.chem..2016.13465
MLA
Hossein Eshghi; M Eftekhar; M Rahimizadeh; M Hassanpour; M Bakavoli. "Efficient Solvent Free Synthesis of 12-Aryl-8,9,10,12-tetrahydrobenzo[a]-xanthen-11-ones and 3H-Spiro[isobenzofuran-1,9'-xanthen]-3-one Derivatives Using Cobalt Hydrogensulfate as a Green, Heterogeneous and Reusable Catalyst". Organic Chemistry Research, 2, 1, 2016, 20-27. doi: 10.22036/org.chem..2016.13465
HARVARD
Eshghi, H., Eftekhar, M., Rahimizadeh, M., Hassanpour, M., Bakavoli, M. (2016). 'Efficient Solvent Free Synthesis of 12-Aryl-8,9,10,12-tetrahydrobenzo[a]-xanthen-11-ones and 3H-Spiro[isobenzofuran-1,9'-xanthen]-3-one Derivatives Using Cobalt Hydrogensulfate as a Green, Heterogeneous and Reusable Catalyst', Organic Chemistry Research, 2(1), pp. 20-27. doi: 10.22036/org.chem..2016.13465
VANCOUVER
Eshghi, H., Eftekhar, M., Rahimizadeh, M., Hassanpour, M., Bakavoli, M. Efficient Solvent Free Synthesis of 12-Aryl-8,9,10,12-tetrahydrobenzo[a]-xanthen-11-ones and 3H-Spiro[isobenzofuran-1,9'-xanthen]-3-one Derivatives Using Cobalt Hydrogensulfate as a Green, Heterogeneous and Reusable Catalyst. Organic Chemistry Research, 2016; 2(1): 20-27. doi: 10.22036/org.chem..2016.13465
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