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Published on: April 19, 2019
A Versatile Method for the Protection of Carbonyl Compounds by Camphor Sulfonic Acid
Ram Naresh Yadav1, Bimal Krishna Banik1
11Department of Chemistry, The University of Texas-Pan American, 1201 West University Drive, Edinburg, TX78539, USA; 2Department of Chemistry, Faculty of Engineering & Technology, Veer Bhadur Singh Purvanchal University, Jaunpur-222003 (UP) India; 3Community Health System of South Texas, 3135 S. Sugar Road, Edinburg, TX78539, USA.
Background:
Carbonyl groups are important functional groups and they play a key role in organic chemistry. This group needs to be protected in multistep synthesis against various reagents for a counter-reaction. The effort towards developing an efficient methodology for the protection of car-bonyl functional group is always a demanding reaction. The protection of carbonyl compounds for in-hibiting their chemical reactivity is an important operation in chemistry. In this paper, camphor sulfonic acid-catalysed protection of various carbonyl compounds is developed. This method is simple, envi-ronmentally friendly and yields products in high yields.
Method:
Commercially available camphor sulfonic acid is used as organo-catalyst for the protection of carbonyl functionality. This catalyst is also employed for the protection of carbonyl functionality as thi-oacetal/mixed ketal in excellent yield. The newly synthesize compounds are characterized using 1HNMR, 13C NMR and IR spectroscopy.
Result:
A diverse carbonyl functional group is protected in excellent yield under mild reaction condi-tions.
Conclusion:
We have developed an efficient organocatalysed protection method of carbonyl function-ality applicable to wide range of substrates.
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