搜索:  
Organocatalytic Regioselective Synthesis of Sulfur-Containing N-Alkyl Carbamates from Alkyne-Derived Cyclic Carbonates  
Organocatalytic Regioselective Synthesis of Sulfur-Containing N-Alkyl Carbamates from Alkyne-Derived Cyclic Carbonates
資料類型: PDF文件
關鍵詞: sulfur-containing  N-alkyl  carbamate  Alkyne-Derived  Cyclic  Carbonates  
資料大小: 349k
所屬學科: 高分子化學
來源: 來源網絡
簡介:
A highly regioselective synthesis of sulfur-containing N-alkyl carbamate from propargyl alcohol, carbon dioxide (CO2) and amine via metal-free catalysis is described. The regioselective ring-opening addition of tri-substituted cyclic carbonate with amine was investigated in detail. A key feature of this system is the ability to afford tertiary β-hydroxyl N-alkyl carbamate with 100% selectivity by using 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) as the catalyst in a wide range of reaction temperatures. The steric hindrance of amine and the use of ethanol favored the regioselective ring-opening addition reaction. A proposed mechanism for the ring-opening addition elaborated the underlying reason for the regioselective synthesis of sulfur-containing N-alkyl carbamate. This study provides a new alternative synthetic route to sulfur-containing N-alkyl carbamates from alkyne and CO2 and may offer an attractive scaffold for further synthesis.
上傳人: xhzhang
上傳時間: 2019-04-01 16:53:27
下載次數: 0
消耗積分: 0  
立即下載:
1人
1人
1人
友情提示:下載后對該資源進行評論,即可獎勵2分。
報告錯誤:  1.下載無效  2. 資料明顯無價值  3. 資料重復存在

相關評論 共有0人發表評論 更多評論
你還沒有登錄,無法發表評論,請首先 登錄 注冊
免責聲明:本站部分資源由網友推薦,來自互聯網,版權屬于原版權人,如果不慎侵犯到您的權利,敬請告知,我們會在第一時間撤除。本站中各網友的評論只代表其個人觀點,不代表本站同意其觀點。
澳洲幸运8开奖数结果