The racemization is particularly preferably carried out in organic solvents with or without the addition of water at temperatures of between 150° C. and 180° C. at a pressure of {TAIL ~ up to 10 bar} for {HEAD ~ 20 to 26 hours} 
The racemization is particularly preferably carried out in organic solvents with or without the addition of water at temperatures of between 150 ° C. and 180 ° C. at a pressure of { TAIL ~ up to 10 bar } for { HEAD ~ 20 to 26 hours }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD