HETEROPOLY ACIDS AS CATALYST FOR a-THIOCYANATION OF KETONES
2855
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Compound 16. IR (KBr): 3040, 2849, 2110, 1715, 1645. H NMR CDCl3
(d ppm): 2.48 (s, 6H), 4.90 (s, 1H). 13C NMR CDCl3 (d ppm): 29.10, 61.78,
112.12, and 202.69.
CONCLUSION
In conclusion, we have developed an alternative and simple protocol for the
synthesis of a-oxothiocyanates using HPA as an ecofriendly, reusable, inexpensive,
and efficient catalyst. Excellent yields, relatively short reaction times, and easy
workup are some of the advantages of this protocol.
ACKNOWLEDGMENTS
The authors are grateful to the University Grant Commission, New Delhi, for
financial support. Thanks also go to Dr. S. T. Gadade, principal, C. K. Thakur
College, for providing the laboratory and other facilities.
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