24小时热门版块排行榜    

Znn3bq.jpeg
查看: 666  |  回复: 4
本帖产生 1 个 翻译EPI ,点击这里进行查看

answerball

金虫 (小有名气)


[交流] 翻译一段有机化学的英文文献

The same research group developed two different
protocols for the preparation of 2-substituted-3-
allylbenzofurans from o-alkynylphenols and allyl
carbonates under palladium catalysis 。
The stepwise method (method A) was based on the
preparation of stereo- and regioisomeric mixtures of
O-allyl derivatives and their subsequent cyclization
to benzofurans, being the method of choice when
steric differences between the two allylic termini are
small. The one-pot protocol (method B), omitting
isolation of the O-allyl derivatives, was employed
when the reaction proceeds through è3-allylpalladium
complexes and also when the two allylic termini are
markedly different from a steric point of view.
Concerning the reaction mechanism, the cyclization
of the O-allyl derivatives was suggested to proceed
through the palladium-promoted ionization of the
allylic C-O bond and displacement of one ligand to
the palladium by the carbon-carbon triple bond,
intramolecular nucleophilic attack of the oxygen atom
across the activated carbon-carbon triple bond, and
reductive elimination 。

» 猜你喜欢

» 抢金币啦!回帖就可以得到:

查看全部散金贴

已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

抱着金币去死!
2楼2011-02-20 19:31:49
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

answerball

金虫 (小有名气)


引用回帖:
Originally posted by 8814402 at 2011-02-20 11:31:49:
抱着金币去死!

看的懂的话也是举手之劳,金币本来也没什么用
3楼2011-02-20 19:54:34
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

The same research group developed two different protocols for the preparation of 2-substituted-3-allylbenzofurans from o-alkynylphenols and allyl carbonates under palladium catalysis.

同一个研究小组开发了两种不同的方法,都是在钯催化条件下,由邻苯基苯酚烷基和碳酸盐合成2-取代-3烯丙基苯并呋喃。
4楼2011-02-20 22:46:09
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
answerball(金币+1, 翻译EPI+1): 2011-02-21 16:05:23

The stepwise method (method A) was based on the
preparation of stereo- and regioisomeric mixtures of
O-allyl derivatives and their subsequent cyclization
to benzofurans, being the method of choice when
steric differences between the two allylic termini are
small.
分布反应(方法A)是基于O-烯丙基取代物以及接下来的环化形成苯并呋喃立体选择性和区域选择性混合物。该方法在当两种烯丙基目标分子的立体差别不大时使用!
5楼2011-02-21 08:45:21
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
相关版块跳转 我要订阅楼主 answerball 的主题更新
普通表情 高级回复 (可上传附件)
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 085600材料与化工,求调剂 +6 won_qii 2026-04-07 6/300 2026-04-08 21:57 by hypershenger
[考研] 324求调剂 +17 想上学求调 2026-04-03 17/850 2026-04-08 20:04 by 我减肥1
[考研] 一志愿吉大化学327求调剂 +12 王王白石 2026-04-06 13/650 2026-04-08 16:05 by luoyongfeng
[考研] 315求调剂 +17 欣喜777 2026-04-04 18/900 2026-04-08 13:54 by hangsimei
[考研] 调剂 +3 电气300求调剂不 2026-04-08 6/300 2026-04-08 09:39 by 电气300求调剂不
[考研] 259求调剂 +5 就爱吃土豆呀呀 2026-04-07 5/250 2026-04-07 22:40 by JourneyLucky
[考研] 一志愿南科大生物学297分,求调剂推荐 +8 Y-yyusx 2026-04-06 9/450 2026-04-07 19:38 by biomichael
[考研] 生物学求调剂 一志愿沪9,326分 +6 刘墨墨 2026-04-06 6/300 2026-04-06 19:36 by lijunpoly
[考研] 生物学求调剂 +5 15064154688 2026-04-03 5/250 2026-04-06 11:56 by lijunpoly
[考研] 一志愿211生物学280分 求调剂 +5 李rien 2026-04-05 5/250 2026-04-06 10:30 by zhyzzh
[考研] 272分求调剂 +4 wangyile2233 2026-04-02 4/200 2026-04-05 22:21 by 286640313
[考研] 085600调剂 +9 东照照照 2026-04-04 9/450 2026-04-05 13:44 by ujn_zhuj
[考研] 考研调剂 +3 mcbbc 2026-04-04 3/150 2026-04-05 10:03 by barlinike
[考研] 求调剂,一志愿北京中医药大学 +3 小小达不溜 2026-04-02 3/150 2026-04-03 22:55 by 冲矢昴星团
[考研] 考研调剂 +5 小sun要好运 2026-04-03 5/250 2026-04-03 21:43 by 啵啵啵0119
[考研] 求材料调剂 一志愿南昌大学 328分 +5 yyy..... 2026-04-03 5/250 2026-04-03 13:46 by 百灵童888
[考研] 330求调剂 +3 白神呜呼呼 2026-04-02 3/150 2026-04-03 10:15 by 蓝云思雨
[考研] 专硕 351 086100 也是考的材科基 本科也是材料 +8 202451007219 2026-04-02 8/400 2026-04-03 09:50 by 蓝云思雨
[考研] 346求调剂 +5 郑诚乐 2026-04-02 5/250 2026-04-02 16:38 by SZW_UJN
[考研] 270调剂 +7 maxjxbsk 2026-04-02 7/350 2026-04-02 09:50 by yulian1987
信息提示
请填处理意见