4-Nitrobenzyl 2-diazoacetoacetate

The substance is characterized as a white or nearly white powder, which can range to a light yellow shade.

The invention presents a method for preparing p-nitrobenzyl 2-diazoacetoacetate through a two-step reaction process. This method offers numerous benefits, such as streamlined processing steps, easier industrial production, reduced production costs, enhanced product quality, and increased yield. Using nitrobenzyl alcohol as a standard, the overall mol yield achieves 95% or more, and the purity of the product compound (IV) reaches at least 99.5%.
CN101983958A/en