[問題]有關E2反應
最近在反應是要走E2 or Sn2遇到了一些問題
我大概知道SN2是在一級或二級醇和相對弱鹼反應
一級及二級是因為它的立體阻礙小
而相對弱鹼是他不容易拔掉H 相對比較容易去親核
可是我對E2反應卻很混亂
我不確定在幾級碳上會比較容易走E2
我個人的想法是級數較少的碳立體阻礙小 然後相對強鹼容易可以拔掉H而走E2
可是我看很多資料上E2好像可以在 sec or tert 的碳上反應???
另外我有稍微爬了一下文 說是雙鍵時取代基越多越穩定
所以我的問題是在E2反應時我要考慮立體障礙問題嗎
還是單純看形成雙鍵時的取代基多寡所造成的穩定度呢???
請各位高手幫我解答一下吧 感激捏~~~~~~
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 140.120.226.14
→
11/19 17:03, , 1F
11/19 17:03, 1F
→
11/19 17:05, , 2F
11/19 17:05, 2F
→
11/19 17:06, , 3F
11/19 17:06, 3F
→
11/19 17:07, , 4F
11/19 17:07, 4F
→
11/19 17:07, , 5F
11/19 17:07, 5F
→
11/19 22:16, , 6F
11/19 22:16, 6F
推
11/19 22:30, , 7F
11/19 22:30, 7F
→
11/19 22:31, , 8F
11/19 22:31, 8F
→
11/19 22:32, , 9F
11/19 22:32, 9F
→
11/19 22:33, , 10F
11/19 22:33, 10F
→
11/19 22:34, , 11F
11/19 22:34, 11F
→
11/19 22:39, , 12F
11/19 22:39, 12F
→
11/19 23:35, , 13F
11/19 23:35, 13F
→
11/19 23:39, , 14F
11/19 23:39, 14F
→
11/19 23:39, , 15F
11/19 23:39, 15F
→
11/20 00:22, , 16F
11/20 00:22, 16F
→
11/20 00:23, , 17F
11/20 00:23, 17F
推
11/20 00:26, , 18F
11/20 00:26, 18F
→
11/20 00:45, , 19F
11/20 00:45, 19F
→
11/20 00:46, , 20F
11/20 00:46, 20F
→
11/20 00:47, , 21F
11/20 00:47, 21F
→
11/20 09:39, , 22F
11/20 09:39, 22F
→
11/20 09:40, , 23F
11/20 09:40, 23F
→
11/20 09:44, , 24F
11/20 09:44, 24F
→
11/20 09:45, , 25F
11/20 09:45, 25F
→
11/20 09:46, , 26F
11/20 09:46, 26F
→
11/20 22:42, , 27F
11/20 22:42, 27F
→
11/20 22:43, , 28F
11/20 22:43, 28F
→
11/22 03:38, , 29F
11/22 03:38, 29F
→
11/22 03:40, , 30F
11/22 03:40, 30F
→
11/22 03:42, , 31F
11/22 03:42, 31F
→
11/22 03:49, , 32F
11/22 03:49, 32F
→
11/09 09:52, , 33F
11/09 09:52, 33F
→
01/02 14:02,
5年前
, 34F
01/02 14:02, 34F
→
07/06 20:53,
5年前
, 35F
07/06 20:53, 35F