一、对硝基苯甲酸乙酯
取120mL无水乙醇,83.5g对硝基苯甲酸和8g对甲苯磺酸,加入烧瓶,回流40分钟,并量30mL环己烷,待用
共反应了5h,回收溶剂至130度,冷却,倾入水中,凝固,抽滤,滤渣加入水中,加热至熔化,强搅拌,加碳酸钠,调至PH为9,加冰水,析晶,得到湿品104
g
<code>开更,首先还原上步产物,劝你们不要用铁粉,恶心至极,成功做出了纳米Fe3O4,产率才60,全被铁泥吃了<p><span data-tag="nkcsource" data-type="picture" data-id="287385" style="width:1920px;"> <span style="padding-top:75%;"> <img data-global-click="viewImage" data-global-long-press="longPressImageForRN" data-global-data="%7B%22name%22%3A%22IMG_20180719_141722.jpg%22%2C%22url%22%3A%22https%3A%2F%2Fimg.kechuang.org%3A81%2Fr%2F287385%3Fc%3Dresource%26t%3Dlg%22%2C%22height%22%3A1440%2C%22width%22%3A1920%7D" data-src="https://img.kechuang.org:81/r/287385?c=resource" alt="IMG_20180719_141722.jpg" data-type="view" dataimg="content" class="lazyload"> </span> </span></p> <p><span data-tag="nkcsource" data-type="picture" data-id="287386" style="width:1920px;"> <span style="padding-top:133.33333333333334%;"> <img data-global-click="viewImage" data-global-long-press="longPressImageForRN" data-global-data="%7B%22name%22%3A%22IMG_20180719_155345.jpg%22%2C%22url%22%3A%22https%3A%2F%2Fimg.kechuang.org%3A81%2Fr%2F287386%3Fc%3Dresource%26t%3Dlg%22%2C%22height%22%3A2560%2C%22width%22%3A1920%7D" data-src="https://img.kechuang.org:81/r/287386?c=resource" alt="IMG_20180719_155345.jpg" data-type="view" dataimg="content" class="lazyload"> </span> </span></p> <p><span data-tag="nkcsource" data-type="picture" data-id="287387" style="width:1920px;"> <span style="padding-top:133.33333333333334%;"> <img data-global-click="viewImage" data-global-long-press="longPressImageForRN" data-global-data="%7B%22name%22%3A%22IMG_20180720_204756.jpg%22%2C%22url%22%3A%22https%3A%2F%2Fimg.kechuang.org%3A81%2Fr%2F287387%3Fc%3Dresource%26t%3Dlg%22%2C%22height%22%3A2560%2C%22width%22%3A1920%7D" data-src="https://img.kechuang.org:81/r/287387?c=resource" alt="IMG_20180720_204756.jpg" data-type="view" dataimg="content" class="lazyload"> </span> </span></p> </code>
上一步的三十g产物,28g碳酸钾,100mL甲基异丁基甲酮,混合,油浴120度,量取22mL正溴丁烷,2S一滴,滴毕,反应5h
<code>5h后,油浴设定为160度,蒸尽溶剂,残余物加温水,分出油层,倾入冰水中,使凝固,抽滤水洗</code>
算了,重新开一个(上次失败了)取对硝基苯甲酸42g,氯化亚砜共45mL,DMF2mL,回流至无气体发生,蒸掉氯化亚砜,再加30mL乙酸乙酯,蒸尽,反复两次,目的是蒸尽氯化亚砜(如果不干净,副产物可以让你的DNA插上几个烷基,)
加入130mL乙酸乙酯,搅拌,溶解完毕,50mL水(注意顺序),搅拌下,滴加25g三乙胺,24g二甲基乙醇胺,滴毕,分液取油层,蒸掉溶剂,残液加入100mL水中,20mL盐酸酸化,加入活性炭,抽滤,碳酸钠碱化,析出沉淀,抽滤,晾干(图片不小心删了
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25g铁粉,加50mL1比10盐酸活化十分钟,倾去盐酸,加4g氯化铵和60mL水,加热至65度,取出。上步产物(22g),10mL盐酸70mL水混合,搅拌下滴加,控制不超过70,度,滴毕,50度反应1.5h
抽滤,滤液加入硫化钠除铁,抽滤,滤液碱化(加碳酸钠至PH=8),抽滤得成品
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