The invention relates to a novel process for the preparation of 2-trifluoromethyl isonicotinic acid and esters of the formula I which involves a palladium catalysed carbonylation or cyanation step wherein R
1
is hydrogen or Q
1-6
-alkyl. The 2-trifluoromethyl isonicotinic acid and esters of the formula I are versatile intermediates for the preparation of active pharmaceutical and agrochemical agents such as for instance TAAR 1 agonists of the formula III.
本发明涉及一种新的制备2-三
氟甲基
异烟酸及式I酯的方法,其中包括
钯催化的羰基化或
氰化步骤,其中R1为氢或Q1-6-烷基。2-三
氟甲基
异烟酸及式I酯是制备活性制药和农药剂的多功能中间体,例如
TAAR 1激动剂的式III。