24小时热门版块排行榜    

查看: 376  |  回复: 1
本帖产生 1 个 翻译EPI ,点击这里进行查看

Oliverwis

铁杆木虫 (正式写手)

好人!

[求助] 翻译几句话

However, the yield dropped significantly when a bulky R group is present,which could be explained by the increased difficulty in the formation of enamine
with bulky ketones. The condensations of cyclic diones also proceeded
in lower yields and required longer time to complete, but with better diastereoselectivity. Compared to the reactions with D-glucosamine, the reactions
with D-galactosamine generally proceeded with lower diastereoselectivity.

» 猜你喜欢

难人!
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

slz146

木虫 (正式写手)

【答案】应助回帖

★ ★ ★ ★ ★ ★ ★ ★ ★
Oliverwis(金币+8, 翻译EPI+1): 2011-08-11 20:24:24
sltmac(金币+2): 2011-08-12 08:24:29
sltmac(金币+7): 奖励~ 2011-08-14 07:55:44
然而,当大体积的R官能团存在时,产率大幅度下降,这可能是由于烯胺以及大体积的酮形成的难度增加。环二酮的缩合具有更低的产率,其需要更多的时间来完成,但是其具有更好的非对映选择性。就以与D-氨基葡萄糖的反应相比来说,与D-半乳糖胺
的反应具有更低的非对映选择性。
2楼2011-08-11 20:22:18
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 Oliverwis 的主题更新
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 0854复试调剂 276 +4 wmm9 2026-03-01 5/250 2026-03-02 06:41 by 汪!?!
[考研] 0857调剂 +4 一ll半 2026-02-28 5/250 2026-03-02 02:33 by 908055542
[考研] 279求调剂 +3 dua1 2026-03-01 4/200 2026-03-02 00:23 by 大脸蛋子
[考研] 求调剂 +5 yunziaaaaa 2026-03-01 6/300 2026-03-01 23:57 by ccp273206157
[考研] 江苏省农科院招调剂1名 +3 Qwertyuop 2026-03-01 3/150 2026-03-01 23:18 by aaadim
[考研] 26考研报考西工大材料308分求调剂 +3 weizhong123 2026-03-01 3/150 2026-03-01 21:42 by 公瑾逍遥
[考研] 299求调剂 +3 Y墨明棋妙Y 2026-02-28 5/250 2026-03-01 21:01 by tangxiaotian
[考研] 306分材料调剂 +4 chuanzhu川烛 2026-03-01 5/250 2026-03-01 19:48 by 无际的草原
[考研] 298求调剂 +6 axyz3 2026-02-28 6/300 2026-03-01 19:00 by 18137688336
[考研] 272求调剂 +6 材紫有化 2026-02-28 6/300 2026-03-01 18:58 by 18137688336
[考博] 26申博 +4 想申博! 2026-02-26 6/300 2026-03-01 17:32 by 想申博!
[考研] 化工专硕348,一志愿985求调剂 +5 弗格个 2026-02-28 8/400 2026-03-01 17:25 by sunny81
[考研] 课题组接收材料类调剂研究生 +3 gaoxiaoniuma 2026-02-28 4/200 2026-03-01 14:30 by jjj三跨
[考研] 295复试调剂 +3 简木ChuFront 2026-03-01 3/150 2026-03-01 14:27 by zzxw520th
[考研] 材料调剂 +4 爱擦汗的可乐冰 2026-02-28 4/200 2026-03-01 00:38 by 猫猫球alter
[考研] 304求调剂 +3 52hz~~ 2026-02-28 5/250 2026-03-01 00:00 by 52hz~~
[考研] 264求调剂 +3 巴拉巴拉根556 2026-02-28 3/150 2026-02-28 21:31 by gaoxiaoniuma
[考研] 085600材料工程一志愿中科大总分312求调剂 +8 吃宵夜1 2026-02-28 10/500 2026-02-28 20:27 by L135790
[高分子] 求环氧树脂研发1名 +3 孙xc 2026-02-25 11/550 2026-02-28 16:57 by ichall
[硕博家园] 【博士招生】太原理工大学2026化工博士 +4 N1ce_try 2026-02-24 8/400 2026-02-26 08:40 by N1ce_try
信息提示
请填处理意见