The present invention relates to a process for preparing a &bgr;-oxonitrile compound or an alkali metal salt thereof which comprises reacting a carboxylic ester represented by the formula (1):
R
1
CO
2
R
2
(1)
wherein R
1
and R
2
each represent a group which does not participate in a reaction, provided that R
2
excludes a hydrogen atom,
with a nitrile compound represented by the formula (2):
R
3
CH
2
CN (2)
wherein R
3
represents an alkyl group,
and a base at 145 to 300° C. in a sealed vessel to obtain an alkali metal salt of a P-oxonitrile compound represented by the formula (3):
1
wherein R
1
and R
3
have the same meanings as defined above,
and neutralizing the same with an acid, if necessary.
本发明涉及一种制备β-
氧腈化合物或其碱
金属盐的方法,包括将由
化学式(1)表示的
羧酸酯与由
化学式(2)表示的腈化合物在145至300°C下与碱在密封容器中反应,以获得由
化学式(3)表示的β-
氧腈化合物的碱
金属盐,其中R1和R3具有上述定义的相同含义,并在必要时用酸中和它。