Electrocarboxylation synthesis for obtaining intermediates useful for the synthesis of span derivatives

摘要

The present invention relates to a process for obtaining a compound of formula (1), (2) or (3) by means of a electrocarboxylation with CO 2 . The present invention also relates to the new intermediates (1) and (2). The present invention further relates to the use of intermediates (1) and (2) as starting materials for the synthesis of SPAN derivatives.