| 查看: 392 | 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
同事接到电话了，我却没有
已经有4人回复
-
准备明年的基金了
已经有5人回复
-
今年的WR进展到哪一步了？
已经有6人回复
-
这种情况还有戏吗
已经有8人回复
-
时间戳他又来了
已经有11人回复
-
小木虫看见有人已经知道结果了
已经有15人回复
-
这个自发加氧反应的机理是什么？
已经有6人回复
-
J-J-W不为人知的一面
已经有18人回复
-
没消息就是被刷了呗
已经有13人回复
-
水蒸气蒸馏法乳化现象
已经有3人回复
2楼2015-07-24 11:38:49