Enantioselective Synthesis of C2-Quaternary Indolin-3-ones by Pt-Catalyzed Alkynylation of 2-Aryl-3<i>H</i>-indol-3-one with Alkynylsilanes
作者:Fan Yang、Shaojian Luo、Meifen Wang、Baomin Fan、Bo Yao
DOI:10.1021/acs.joc.3c02807
日期:2024.3.1
method for the synthesis of five-membered chiral propargylic amines from 2-aryl-3H-indol-3-one and alkynylsilanes has been developed. The reaction proceeded under the catalytic system of PtCl4, oxazoline-based ligand L11, Zn(CF3COO)2, and AcOH in DCE at 95 °C via in situ desilylation of TMS-alkynes. This methodology also highlights a new protocol for the in situ desilylation of alkynylsilanes. The reaction
Buu-Hoi et al., Journal of the Chemical Society, 1957, p. 3126,3128
作者:Buu-Hoi et al.
DOI:——
日期:——
Efficient synthesis of 2-arylindoles, 2-arylimidazo[1,2-a]pyridines and 2-arylquinoxalines, and their bis-derivatives using [Hmim]OTf ionic liquid supported on nano-silica as a reusable catalyst
作者:Mohammad Soltani、Iraj Mohammadpoor-Baltork、Ahmad R. Khosropour、Majid Moghadam、Shahram Tangestaninejad、Valiollah Mirkhani
DOI:10.1007/s13738-015-0603-2
日期:2015.8
AbstractAn efficient and facile method for the synthesis of 2-arylindoles, 2-arylimidazo[1,2-a]pyridines and 2-arylquinoxalines by the reaction of variousα-bromoketones with anilines, 2-aminopyridine and 1,2-phenylenediamine, respectively, in the presence of N-methylimidazolium trifluoromethanesulfonate ionic liquid supported on nano-silica ([Hmim]OTf@nano-SiO2) as a reusable catalyst under solvent-free
摘要通过各种α-溴代酮与苯胺,2-氨基吡啶和1,2-苯二胺的反应,合成2-芳基吲哚,2-芳基咪唑并[1,2- a ]吡啶和2-芳基喹喔啉的一种高效简便的方法,分别在无溶剂条件下,在可重复使用的催化剂上,负载在纳米二氧化硅上的N-甲基咪唑三氟甲磺酸盐离子液体([Hmim] OTf @ nano-SiO 2)存在。这些化合物的双衍生物也首次使用该催化体系得到了有效的制备。所有产物均以高收率和短反应时间获得。 图形概要
Pd-Catalyzed Asymmetric Allylation Reaction of 2-Aryl-3<i>H</i>-indol-3-ones with Allyltrimethylsilane
作者:Fan Yang、Lun Wang、Meiqi Liang、Linchun Zhang、Baomin Fan、Bo Yao
DOI:10.1021/acs.joc.3c02599
日期:2024.2.2
time. The reaction proceeded under the catalysis of Pd(OAc)2 and chiral phosphoric ligand L11 in the presence of Cu(CF3COO)2·XH2O, PivOH, and 5 Å molecular sieves in DMSO at 60 °C. The present methodology can avoid the impact of amine products generated by the reaction on the catalyst, and at the same time, the high catalytic activity of classical palladiumcatalysts still has catalytic ability for low
首次开发了2-芳基-3H-吲哚-3-酮与烯丙基三甲基硅烷首次烯反应的有效方法。该反应在Pd(OAc) 2和手性磷酸配体L11的催化下,在Cu(CF 3 COO) 2 · X H 2 O、PivOH和5 Å分子筛的存在下,在DMSO中于60℃下进行。本方法可以避免反应生成的胺产物对催化剂的影响,同时经典钯催化剂的高催化活性仍然对低亲电子酮亚胺具有催化能力。所需产物具有优异的产率和良好的对映选择性。