VYAS BRAHMANAND AMBASHANKAR,IYER RAMASWAMY,GODREJ NADIR BURJOR,WAGHMARE SAMSON LUCAS,MISTRY KEKI BAMANSHAW
申请号：
IN1729/MUM/2008
公开号：
IN251510B
申请日:
2008.08.14
申请国别(地区):
IN
年份:
2012
代理人:
摘要：
A process for synthesis of a herbicidally active salt of pyrimidinyloxy benzoic acid having the formula in high yields, wherein M+ is an alkali metal ion or an ammonium ion. A hydroxy substituted benzoic acid is reacted with a pyrimidine in the presence of a phase transfer catalyst at a temperature in the range of 50 to 110 C in the presence of an inert organic solvent taken in a quantity of 4 to 5 liters per mole of any of the reactants and at a hydroxyl ion concentration required to maintain a pKa in the range of 7.5 to 9.0. The invention also relates to the herbicidally active salt prepared by the process, to the salt compositions and to a method of killing weeds by using the composition.
