Isolation and purification of 4-propylguaiacol and 4-propylsyringol by extraction and crystallization from the products of reductive catalytic fractionation processes

We report an easy protocol based on extraction and crystallization to isolate and purify 4-propylguaiacol and 4-propylsyringol from RCF-based products. GC purities reached 93.1% and 98.3%, respectively.