申请人:E.I. du Pont de Nemours and Company
公开号:US20140155617A1
公开(公告)日:2014-06-05
Disclosed is a method for preparing a compound of Formula 1 wherein Q and Z are as defined in the disclosure comprising distilling water from a mixture comprising a compound of Formula 2, a compound of Formula 3, a base comprising at least one compound selected from the group consisting of alkaline earth metal hydroxides of Formula 4 wherein M is Ca, Sr or Ba, alkali metal carbonates of Formula 4a wherein M
1
is Li, Na or K, 1,5-diazabicyclo[4.3.0]non-5-ene and 1,8-diazabicyclo[5.4.0]undec-7-ene, and an aprotic solvent capable of forming a low-boiling azeotrope with water. Also disclosed is a method for preparing a compound of Formula 2 comprising (1) forming a reaction mixture comprising a Grignard reagent derived from contacting a compound of Formula 5 wherein X is Cl, Br or I with magnesium metal or an alkylmagnesium halide in the presence of an ethereal solvent, and then (2) contacting the reaction mixture with a compound of Formula 6 wherein Y is OR
11
or NR
12
R
13
, and R
11
, R
12
and R
13
are as defined in the disclosure. Further disclosed is a method for preparing a compound of Formula 7 wherein Q and Z are as defined in the disclosure, using a compound of Formula 1 characterized by preparing the compound of Formula 1 by the method disclosed above or using a compound of Formula 1 prepared by the method disclosed above.
本发明公开了一种制备式1化合物的方法,其中Q和Z如本文所定义,包括从混合物中蒸馏水的步骤,所述混合物包括式2化合物、式3化合物、碱性土属金属氢氧化物(式4,其中M为Ca、Sr或Ba)、碱金属碳酸盐(式4a,其中M1为Li、Na或K)、1,5-二氮杂双环[4.3.0]非-5-烯和1,8-二氮杂双环[5.4.0]十一烯,以及能够与水形成低沸点共沸物的无水溶剂。本发明还公开了一种制备式2化合物的方法,包括(1)形成反应混合物,所述反应混合物包括通过将式5化合物(其中X为Cl、Br或I)与镁金属或烷基镁卤化物接触形成的Grignard试剂,在乙醚溶剂存在下,然后(2)将反应混合物与式6化合物(其中Y为OR11或NR12R13,R11、R12和R13如本文所定义)接触的步骤。本发明还公开了一种利用通过上述公开的方法制备的式1化合物或者利用通过上述公开的方法制备的式1化合物进行制备的式7化合物的方法,其中Q和Z如本文所定义。