例句 /

The results showed that when the molar ratio of thionyl chloride to , -difluorobenzoic acid was :,refluxed for 8 h,the yield of ,-difluorobenzoyl chloride was 89%;

The results showed that when the molar ratio of thionyl chloride to , -difluorobenzoic acid was :,refluxed for 8 h,the yield of ,-difluorobenzoyl chloride was 89%;

果表明:n(氯化亚砜)/n(化合物)=∶,回流反应8 h 得到,-二氟苯甲酰氯(化合物),收率89%(质量分数);