1: 32 percent / 1O2 / -80 °C / Irradiation 2: thiourea / methanol 3: 95 percent / MCPBA 4: 60 percent / CF3CO2H / methanol View Scheme

<b>Multi-step reaction with 2 steps<br /> </b>1: oxidation by Pseudomonas putida strain<br />2: imidazole / dimethylformamide<br /> <br /> &nbsp;