| 查看: 360 | 回复: 1 | |||
[求助]
求翻译
|
|
求 翻译 A 25 mL roundbottomed flask was charged with thiophene-2-carboxylic acid (3.5 g,4 equiv), Cu2O (1 g, 1 equiv) and toluene (12 mL).The flask was then outfitted with a Dean-Stark trap and condenser and the mixture refluxed overnight with azeotropic removal of water.The yellow/brown suspension was cooled to 60℃ and the product was collected on a medium pore fritted-glass funnel. Under a stream of nitrogen, the filter cake was washed with methanol (12 mL) to remove excess acid, and then with ether until the eluant was colorless, and then with a small amount of hexanes. The product was dried under a flow of nitrogen, then transferred to a flask and dried further under vacuum. The product was obtained as a tan, air-stable powder that was ground with a mortar and pestle to produce a finely divided powder。 [ Last edited by 差不多呀呀呀 on 2015-7-24 at 09:34 ] |
回复此楼» 猜你喜欢
总分293求调剂
已经有3人回复
-
生物技术与工程
已经有3人回复
-
299求调剂
已经有9人回复
-
材料学硕，求调剂
已经有8人回复
-
284求调剂
已经有14人回复
-
292求调剂
已经有4人回复
-
287求调剂
已经有11人回复
-
086003食品工程求调剂
已经有6人回复
-
295求调剂
已经有8人回复
-
考研化学308分求调剂
已经有11人回复
2楼2015-07-24 11:38:49
