Methods: α - Bromo - 4 - benzyloxy acetophenone is synthesized with 4 - hydroxy acetophenone and bromonium as materials and methanol as solvent.方法: 以甲醇为溶剂,以对羟基苯乙酮和溴为原料制备了α - 溴-4-苄氧苯基苯乙酮.Thus , this reduced temperature of...
Thus , this reduced temperature of reaction and increased the rate of acetophenone.降低反应温度,提高了苯乙酮的收率.Objective: A new approach to prepare α - bromo - 4 - benzyloxy acetophenone was introduced.目的: 报道一种合成α - 溴-4-苄氧苯基乙酮的新方法....
The holes were sufficiently large to serve as nests.这些洞作鸟巢足够大。Everywhere building facades are pitted with shell and bullet holes.任一处的建筑物正面都布满了弹洞。Fill small holes with wood filler in a matching colour.用颜色相配的木质填料填平小孔。...
他让信使把稿件送到新闻检查官办公室.He sent the draft to the censor's office by a runner.检查官提出的每一点都是有力的.Every point made by the prosecuting attorney was telling.检查官会把你的证言驳得体无完肤.The prosecutor would tear your testimony to pieces....
This word is aptly used here.这个词用在这里倒是非常贴切.The teacher aptly nicknamed Chaplin by his students because of his moustachio.这个老师留小胡须学生们很贴切的给他起了卓别林的外号.It could more aptly named " water - boiled chilis with beef garnish. "应该更...
All dates should be completed according to Gregorian Calendar.表中所有日期均须按阳历填报.When Sweden moved to the Gregorian calendar, December 13 stuck.虽然瑞典人开始采用公历, 但是12月13日却被保留了下来.September is the ninth month of the year in the Greg...
Each case is judged on its merits.每个案件都是按照案件本身的特点判定的。They have been per-suaded of the merits of peace.他们被劝服，认识到了和平的好处。Let it be no detraction from his merits to say he is plainspoken.说他坦率的时候请别忘记他的那些优点.Despite the film�...