The invention provides a process for the preparation of a compound of the formula 6 comprising the hydrolysis and decarboxylation of a compound of the formula 5 according to the reaction:
1
wherein R and R
2
independently a C
1
-C
4
alkyl group or an aralkyl group.
该发明提供了一种配方6的化合物制备过程,包括根据反应:1对配方5的化合物进行
水解和脱羧,其中R和R2分别是C1-C4烷基或芳基烷基。