轻度e催化三甲基化碳化合物的三甲基化
Santhosh Reddy Naini1, Venumadhav Janganati1, Arun D R Shada1
1TCG GreenChem, Inc., 701 Charles Ewing Blvd, Ewing, New Jersey 08628, United States.
The Journal of organic chemistry
|January 7, 2026
概括
一个新的甲氧化物 (LiOMe) 催化剂使各种碳化合物的轻微三甲基化成为可能. 这种高效的方法为复杂分子提供了广泛的功能组耐受性和CF3组的二元选择性添加.
科学领域:
- 有机化学 有机化学
- 催化剂是一种催化剂.
- 合成方法论 合成方法论
背景情况:
- 三甲基化是药物化学和材料科学中至关重要的转化.
- 现有的方法通常需要恶劣的条件或专用试剂,限制基质范围和功能组耐受性.
- 开发温和和多功能三甲基化方案是非常可取的.
研究的目的:
- 开发一种温和高效的催化协议,用于三甲基化碳化合物.
- 调查新方法的功能组耐受性和基质范围.
- 探索使用奇拉基质基质的协议的 diastereoselective 潜力.
主要方法:
- 利用甲氧化物 (LiOMe) 作为三甲基化反应的温和催化剂.
- 采用各种类型的化物,非循环和循环,以及α,β-不和碳烯化合物作为基质.
- 研究了来自 (1R,2S)-1-(甲基胺) -2,3-二-1H--2-醇的奇拉基 Ester 的反应,以评估二选择性.
主要成果:
- 通过使用LiOMe,成功地实现了广泛的碳化合物的轻微三甲基化.
- 已证明具有广泛的功能组耐受性,与西,Boc,Cbz,烯和基组兼容.
- 在将CF3添加到奇拉基托 Ester时观察到高的二聚体选择性,产生二聚体比率高达84:16.
结论:
- LiOMe催化协议为三甲基化提供了一种温和,高效和多用途的方法.
- 该方法的广泛的功能组耐受性允许合成复杂的三甲基化分子.
- 经过证明的立体选择性为 valuable chiral 化合物的不对称合成开辟了道路.
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