Trying to learn how to translate from the human translation examples.
From professional translators, enterprises, web pages and freely available translation repositories.
se añadieron a diclorometano (250 ml) anhídrido de ácido butanodioico (4 g, 0,04 moles), nmetilpiperazina (4 g, 0,04 moles) y trietilamina (4 g, 0,04 moles).
butandioic acid anhydride (4 g 0.04 mol), n-methyl piperazine (4 g 0.04 mol) and triethylamine (4 g 0.04 mol) was added to dichloromethane {250 ml).