酸的pD催化C-N交叉合反应的高效过程:对控制因素的洞察
Brett P Fors1, Nicole R Davis, Stephen L Buchwald
1Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139.
Journal of the American Chemical Society
|April 8, 2009
概括
这项研究克服了化 (NaI) 在催化C-N交叉合反应中的抑制作用. 通过使用特定的溶剂和双酸连接剂,可以实现酸与各种氨基的有效合.
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:
- 催化C-N交叉合反应对于形成碳键至关重要.
- 在这些反应中,由于潜在的副作用和催化剂抑制,酸通常是具有挑战性的基质.
- 酸 (NaI) 可以抑制催化交叉合反应.
研究的目的:
- 研究和克服NaI在Pd催化C-N交叉合反应中的抑制作用.
- 开发高效的合成方法,将化与多种氨基结合起来.
- 扩大C-N交叉合的范围,包括 heteroarylamines 和 heteroaryliodides.
主要方法:
- 使用具有特定 biarylphosphine 连接体的类催化剂.
- 使用溶剂系统,其中酸副产品是不溶性的.
- 选反应条件以优化产量和效率.
主要成果:
- 确定了NaI对Pd催化C-N交叉合的显著抑制作用.
- 开发了一种使用不溶性化物副产品的方法,以实现化的高效合,与化和化相似.
- 成功地与各种初级和二级氨基酸发生了酸与各种初级和二级氨基酸的反应.
- 在合 heteroarylamines 和 heteroaryliodides 中证明了高产量.
结论:
- 在Pd催化C-N交叉合中的NaI的抑制作用可以被克服.
- 使用量身定制的溶剂系统和双酸连接物,可以实现酸的高效和高产的C-N交叉合.
- 开发的方法扩大了C-N交叉合的范围,用于合成含有C-N键的复杂分子.
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