该方法具有反应条件温和、官能团耐受性强、活化烯烃和非活化烯烃均可兼容等特点。此方法为含有杂环芳烃的内酰胺骨架的合成提供了一个强大而可靠的工具。 论文信息: Wooseok Lee, Yejin Koo, Hoimin Jung, Sukbok Chang and Sungwoo Hong*,Energy-transfer-induced [3+2] cycloadditions of N–N pyridinium ylides...
B AE CD Dipolarcycloadditionor[3+2]reaction BACED CriegeezwitterionOOODipolarcycloadditionOR1OOR2DipolarcycloreversionR1OO + OR2 R1 R2 O + OR2 Me2SorPPh3insitureduction R1 OO OR2 R1 [3+2]DipolarCycloadditions:GeneralReactionandClassesof1,3-Dipoles B AE CD Dipolarcycloadditionor[3+2]reaction ...
虽然在自由基阳离子环加成反应中[Cr(Ph2phen)3](BF4)3的活性比[Ru(bpz)3](PF6)2要低,作者认为通过对催化剂的改造可以提高其反应活性。作者发现当在苯基的对位引入甲氧基时可以得到一个红移的,吸光度更高的Cr络合物1b([Cr(PMP2phen)3](BF4)3)(Figure 3a)。当利用1b作为光催化剂时,可以使产物5的产率提...
哥伦比亚教授有机化学课件[3+2]Cycloaddition The[3+2]CycloadditionReaction LectureNotes KeyReviews:AsymmetricK.V.Gothelf,K.A.Jorgensen,Chem.Rev.1998,98,863.NitronesP.N.Confalone,Org.React.1988,36,1.AzomethineYlidesI.Coldhaim,R.Hufton,Chem.Rev.2005,105,2765.[3+2]DipolarCycloadditions:AReactionYou...
Energy-transfer-induced [3+2] cycloadditions of N–N pyridinium ylides 能量转移光诱导N-N吡啶叶立德[3+2]环加成 图1: 能量转移energy transfer (EnT) 驱动的N–N吡啶叶立德[3+2]环加成反应的设计方案。 图2:通过能量转移EnT诱导途径,开发了N–N吡啶叶立德的[3+2]环加成反应。
Ferreira*, Dearomative (3+2) Cycloadditions between Indoles and Vinyldiazo Species Enabled by a Red-Shifted Chromium Photocatalyst. Angew. Chem. Int. Ed. 2022. https://doi.org/10.1002/anie.202212187 长按或扫码左侧...
Wooseok Lee, Yejin Koo, Hoimin Jung, Sukbok Chang and Sungwoo Hong*,Energy-transfer-induced [3+2] cycloadditions of N–N pyridinium ylides,Nat. Chem.,2023, https://doi.org/10.1038/s41557-023-01258-2. 本文授权转载自微信公众号「CBG资讯」,未经许可谢绝二次转载,如需转载请联系C菌(微信号:...
Wooseok Lee, Yejin Koo, Hoimin Jung, Sukbok Chang & Sungwoo Hong, Energy-transfer-induced [3+2] cycloadditions of N–N pyridinium ylides, Nature Chem 2023 DOI: 10.1038/s41557-023-01258-2 https://www.nature.com/article...
Asymmetric [3+2] Cycloaddition of α-Imino Amides with Activated Olefins Cu -catalyzed asymmetric [3+2] cycloaddition of α-iminoamides with activated olefins. María González-Esguevillas,Javier Adrio,Juan C. Carretero. ... CH Yamamoto,DL Usanov - 《Synfacts》 被引量: 3发表: 2012年 Cu-...
Haruka Machida and Kazuya Kanemoto*. N-Terminal-Specific Dual Modification of Peptides through Copper-Catalyzed [3+2] Cycloaddition. Angew. Chem. Int. Ed.2024, https://doi.org/10.1002/anie.202320012. 微信号:chembeango101 投稿、转载授权、合作、进群等...