24小时热门版块排行榜    

Znn3bq.jpeg
查看: 367  |  回复: 2
本帖产生 1 个 翻译EPI ,点击这里进行查看
当前只显示满足指定条件的回帖,点击这里查看本话题的所有回帖

hmily601

木虫 (正式写手)

[求助] 帮忙译下。 (有机化学专业)

Aromatic groups lacking an electron-donating substituent worked less well with a similar trend regarding ortho substitution (32d, 32j).Electron-poor aromatic rings were introduced in generally poorer yields (32g, 32h,32o). A similar reactivity range was observed for heterocycles;i.e., an electron-rich indole ring was added in high yield (32k),whereas electron-poor pyridylboronic acids were unreactive(32m, 32n). Copper-mediated direct functionalization of hetero-cycles with amides and the cross-coupling of bromides using the protocols of Wang and Schreiber (46) and Borthwick et al. (47),respectively, were unsuccessful.

» 猜你喜欢

已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

jwdxbjzh

至尊木虫 (职业作家)

【答案】应助回帖

hmily601(金币+15, 翻译EPI+1): 学习了!!谢谢哈! 2011-05-25 13:52:58
在最后一句改为:分别考察了在.......交叉偶联反应,但都不成功。
jwd
3楼2011-05-25 07:57:54
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
查看全部 3 个回答

jwdxbjzh

至尊木虫 (职业作家)

【答案】应助回帖


sltmac(金币+1): 谢谢交流,欢迎常来~~ 2011-05-25 08:55:05
无供电子取代基的芳基不能表现出邻位取代芳基相似的趋势(32d, 32j)。贫电子芳环通常获得较差的收率(32g, 32h, 32o)。 对于杂化化合物而言,相似的反应范围被观察到。即,富电子吲哚环引入后获得了高的收率(32k),而贫电子的吡啶硼酸却几乎不反应(32m, 32n)。分别在铜催化下胺对杂环化合物的直接功能化以及用Wang、Schreiber (46) 和Borthwick等 (47)的方法对溴化物的交叉偶联,但都不成功。
jwd
2楼2011-05-25 07:39:14
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 085404 298分求调剂 +10 呼啦呼啦呼呼呼 2026-04-10 11/550 2026-04-10 16:44 by wangy0907
[考研] 085410-273求调剂 +4 X1999 2026-04-10 4/200 2026-04-10 15:29 by hemengdong
[考研] 342电子信息专硕求调剂 +7 你让我怎么荔枝 2026-04-10 8/400 2026-04-10 15:17 by hemengdong
[考研] 生物与医药273求调剂 +18 荔题南墙 2026-04-05 19/950 2026-04-10 08:14 by kangsm
[考研] 308求调剂 +21 倘若起风了呢 2026-04-05 21/1050 2026-04-10 08:13 by Sammy2
[考研] 288求调剂,一志愿华南理工大学071005 +16 ioodiiij 2026-04-08 16/800 2026-04-09 23:08 by wolf97
[考研] 调剂 +19 2261744733 2026-04-08 19/950 2026-04-09 19:11 by vgtyfty
[考研] 材料工程调剂 +12 小刘同学吖吖 2026-04-06 13/650 2026-04-09 17:07 by luoyongfeng
[考研] 085501机械专硕 302分 不挑专业求调剂 +5 汪某. 2026-04-09 5/250 2026-04-09 15:38 by 蒋皓禹
[考研] 085404,334分,求调剂 +5 sunjie8888 2026-04-08 8/400 2026-04-09 07:26 by sunjie8888
[考研] 生物医药调剂|SCI中科院三区一作+多项科研成果 +8 likangxing 2026-04-07 11/550 2026-04-08 00:02 by lys0704
[考研] 277、学硕,求调剂 数一104, +11 瓶子PZ 2026-04-07 12/600 2026-04-07 23:30 by 一只好果子?
[考研] 0854求调剂 +9 亨氏番茄沙司 2026-04-06 10/500 2026-04-07 14:37 by shdgaomin
[考研] 专硕304找调剂,一线城市最好 +3 李lsl李 2026-04-05 3/150 2026-04-06 12:16 by ffffjjjj
[考研] 化学357分,考研调剂 +11 .Starry. 2026-04-04 12/600 2026-04-06 06:28 by houyaoxu
[考研] 296求调剂 +3 汪!?! 2026-04-05 4/200 2026-04-05 20:13 by 啵啵啵0119
[考研] 348求调剂 +6 wukira 2026-04-04 6/300 2026-04-05 18:11 by 猪会飞
[考研] 一志愿上海海洋大学083200食品学硕,求调剂,接受其他专业083200 +4 what张 2026-04-04 5/250 2026-04-05 14:07 by chw1980_0
[考研] 341求调剂 +3 学无止境,冲 2026-04-05 3/150 2026-04-05 09:40 by lbsjt
[考研] 292求调剂 +11 2022080213 2026-04-04 13/650 2026-04-04 18:38 by macy2011
信息提示
请填处理意见