METHOD FOR PRODUCING ORTHOCARBOXYLIC ACID TRIALKYL ESTERS
The invention relates to a method for producing orthoesters of general formula I, in which the radicals are defined as follows: R<1>: hydrogen, C1 to C20 alkyl, C2 to C20 alkenyl, C2 to C20 alkinyl, C3 to C12 cycloalkyl, C4 to C20 cycloalkyl alkyl or C4 to C10 aryl, R2 and R3: C1 to C20 alkyl, C3 to C12 cycloalkyl and C4 to C20 cycloalkyl alkyl, or R<2> and R<3> together form C2 to C10 alkylene, R<4>: C1 to C4 alkyl. According to the invention, a compound of general formula II is electrochemically oxidised in the presence of C1 to C4 alcohols (alcohols A). In said formula, the radicals R<1> to R<3> have the same definition as in the general formula I and R<5> represents a saturated or unsaturated 5 or 6 membered heterocycloalkyl radical or heterocycloaryl radical comprising up to 2 heteroatoms, selected from the group containing N, O and S, said radical being bonded to the residual part of the molecule by a carbon atom, which is in a vicinal position in relation to a heteroatom.