申请人:——
公开号:US20020065420A1
公开(公告)日:2002-05-30
A method for producing a pyridine compound of formula (II), comprising oxidizing a dihydropyridine compound of formula (I) in the presence of (i) at least one acid and at least one nitrous acid or a nitrite, or (ii) at least one base, and a hydrogen peroxide solution:
1
wherein in formulae (I) and (II), R
1
to R
5
represents a hydrogen atom, or a substituent; L represents an alkyl group, an alkoxy group, an aryl group, or an aryloxy group.
一种生产化合物(II)的吡啶化合物的方法,包括在存在(i)至少一种酸和至少一种亚硝酸或亚硝酸盐,或(ii)至少一种碱以及过氧化氢溶液的情况下氧化化合物(I)的二氢吡啶化合物:其中在式(I)和(II)中,R1至R5代表氢原子或取代基;L代表烷基、烷氧基、芳基或芳氧基。