| 查看: 189 | 回复: 3 | |||
| 当前主题已经存档。 | |||
[交流]
帮忙翻译一下
|
|||
|
4 (4’ - nitrophenyl) - 2,6 - dimethyl-3,5-dicarbethoxy-1,4- dihydropyridine 151 g. 4-nitrobenzaldehyde, 300 cc. methanol, 260 cc. acetoacetic acid ethyl ester and 110 cc. ammonia are heated under reflux for 5 hours and, after cooling and suction-filtration, there are obtained 375 g. of yellow crystals which melt at 132° C.—134° C. after recrystalliza tion from methanol. In an analogous manner there are obtained: from 4-nitrobenzaldehyde, acetoacetic acid methyl ester and ammonia, 4-(4’-nitrophenyl) -2,6-dimethyl-3,5-di- carbomethoxy-1,4-dihydropyridine, M.P. 1960 C.—197° C., from 4-nitrobenzaldehyde, acetoacetic acid isopropyl ester and ammonia, 4-(4’-nitrophenyl) -2,6-dimethyl-3,5-di- carbo-isopropoxy-l,4-dihydropyridine, M.P. 152° C., from 4 - nitrobenzaldehyde, acetoacetic acid ten. - butyl ester and ammonia, 4-(4-nitrophenyl) -2,6-dimethyl-3,5- - dicarbo-tert.-butoxy-l,4-dihydropyridine, M.P. 215° C |
回复此楼» 猜你喜欢
Materials Today Chemistry审稿周期
已经有4人回复
-
萌生出自己或许不适合搞科研的想法，现在跑or等等看？
已经有3人回复
-
参与限项
已经有3人回复
-
假如你的研究生提出不合理要求
已经有7人回复
-
实验室接单子
已经有4人回复
-
全日制（定向）博士
已经有4人回复
-
对氯苯硼酸纯化
已经有3人回复
-
求助:我三月中下旬出站，青基依托单位怎么办？
已经有12人回复
-
所感
已经有4人回复
-
要不要辞职读博？
已经有7人回复
yzhang1986
铁杆木虫 (文坛精英)
- 应助: 0 (幼儿园)
- 贵宾: 1.497
- 金币: 7998.7
- 散金: 299
- 红花: 5
- 帖子: 17111
- 在线: 142.9小时
- 虫号: 668685
- 注册: 2008-12-05
2楼2009-11-16 16:03:33
★ ★ ★ ★ ★ ★
ye5731322(金币+1,VIP+0):谢谢 11-17 11:06
zap65535(金币+5,VIP+0):补发 12-22 03:24
ye5731322(金币+1,VIP+0):谢谢 11-17 11:06
zap65535(金币+5,VIP+0):补发 12-22 03:24
|
4?0?2 ?0?2 (4??-??????) - 2,6 - ?????-3,5-?????????-1,4- ??????? ??151??4-?????????,300cc.???, 260cc.??????????????110cc.?????????5h???????????????????ü??????????375g??????壬?????132??-134?? ??????????????4-?????????,??????????????,????4-(4??-??????) -2,6-?????-3,5-?????????-1,4-?????????????196-197C??????4-?????????,????????????????,???4-(4??-??????)-2,6-?????-3,5-??????????-l,4-???????,???152??C?? ????4-????????????????????-???? ???, ???4-(4-??????) -2,6-?????-3,5-??????-???????-l,4-??????????? 215?? |
3楼2009-11-16 16:41:17
4楼2009-11-16 16:42:17