The invention relates to 2-formyl-2-halomalonates, and their preparation. The compounds are useful in the preparation of their acetals and also in the preparation of 2-(dicarbethoxymethylene)thiazolidine-4-carboxylic acid.
这项发明涉及2-甲醛基-2-卤代
丙二酸酯及其制备。这些化合物在它们的
缩醛制备中很有用,也可用于制备2-(二甲氧羰基亚甲基)
噻唑烷-4-
羧酸。