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Volume 2006
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10.3390/M478
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Short Note

Microwave assisted esterification using Fe2(SO4)3.4H2O/concentrated H2SO4 as efficient catalyst

by
Krunal G. Desai
1,*,
Kishor R. Desai
1 and
D. Padmanabhan
2
1
Department of Chemistry, Synthetic Organic Chemistry Research Laboratory, Veer Narmad South Gujarat University, Surat-395 007 (Gujarat), India
2
Board of Radiation and Isotope Technology, Vashi Complex, Navi Mumbai-400 705 (Maharastra), India
*
Author to whom correspondence should be addressed.
Molbank 2006, 2006(3), M478; https://doi.org/10.3390/M478
Submission received: 27 June 2005 / Accepted: 6 September 2005 / Published: 31 March 2006
Versions Notes

Molbank 2006 m478 i001
2, 4-D 1 (0.221 g, 1 m mole), Fe2(SO4)3.4H2O (0.423 g, 1 m mole) and conc. H2SO4 (0.098 mL) in absolute methanol (20 mL) was taken in RBF placed in a microwave oven and irradiated (300w, 67-68oC) for 5 min [1]. Upon completion of reaction (monitored by TLC), using petroleumether-ethylacetate (8:2) as the eluent solvent system. The reaction mixtures was allowed to attain room temperature, after the completion of reaction the solvent was removed by vacuum distillation and treated with cold water. The liquid product separated washed with water to furnish compound 2, yield 90%.
Melting point: 134-136 oC
IR (KBr) (cm-1): 1722 (>C=O of ester), 1225, 1044 (C-O-C), 3023 (C-H, aromatic ring), 1510 (C=C, aromatic ring), 825 (Ar-Cl).
1H-NMR (CDCl3-DMSO-d6) (400 MHz): δ= 6.70-7.90 (3H, m, Ar-H), 4.0 (3H, s, -COOCH3), 4.46 (2H, s, -CH2).
13C-NMR (CDCl3-DMSO-d6) (62.90 MHz): δ= 115.29-134.1 (aromatic carbons), 170 (>C=O of ester), 20 (-COOCH3), 35 (-CH2).
MS (m/z): 235 (M+) (C9H8O3Cl2+), 204 (C8H5O2Cl2+), 176 (C7H5OCl2+), 59 (C2H3O2+), 31 (CH3O+).
Elemental Analysis: Calculated for C9H8O3Cl2: C 45.95, H 3.40; found: C 45.98, H 3.43.

Supplementary materials

Supplementary File 1Supplementary File 2Supplementary File 3

Acknowledgment

The authors thank the Veer Narmad South Gujarat University, Surat for providing research facilities and one of the author (Krunal Desai) is thankful to the Gujarat Council On Science & Technology, Gandhinagar for financial support (Grant No. GUJCOST/200389/MRP/2003-04/10689). Authors are also thankful to CDRI, Lucknow for providing spectral and analytical data of the compounds. Authors are also thankful to Board of Radiation and Isotope Technology (BARC), Navi Mumbai.

References

  1. Desai, K. G.; Desai, K. R. Indian J. Chem. (Sec-B). 2005. (In Press)
  • Sample Availability: Available from MDPI.

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MDPI and ACS Style

Desai, K.G.; Desai, K.R.; Padmanabhan, D. Microwave assisted esterification using Fe2(SO4)3.4H2O/concentrated H2SO4 as efficient catalyst. Molbank 2006, 2006, M478. https://doi.org/10.3390/M478

AMA Style

Desai KG, Desai KR, Padmanabhan D. Microwave assisted esterification using Fe2(SO4)3.4H2O/concentrated H2SO4 as efficient catalyst. Molbank. 2006; 2006(3):M478. https://doi.org/10.3390/M478

Chicago/Turabian Style

Desai, Krunal G., Kishor R. Desai, and D. Padmanabhan. 2006. "Microwave assisted esterification using Fe2(SO4)3.4H2O/concentrated H2SO4 as efficient catalyst" Molbank 2006, no. 3: M478. https://doi.org/10.3390/M478

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