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Pop, I. E., Déprez, B. P., & Tartar, A. L. (1997). Versatile Acylation ofN-Nucleophiles Using a New Polymer-Supported 1-Hydroxybenzotriazole Derivative. The Journal of Organic Chemistry, 62(8), 2594–2603. doi:10.1021/jo961761g 
10.1021/jo961761g