Double C–S bond formation via C–H bond functionalization: synthesis of benzothiazoles and naphtho[2,1-d]thiazoles from N-substituted arylamines and elemental sulfur
作者:Xiaoming Zhu、Yuzhong Yang、Genhua Xiao、Jianxin Song、Yun Liang、Guobo Deng
DOI:10.1039/c7cc07366f
日期:——
A novel, atom economic, and environmentally friendly method for the synthesis of 2-substituted benzothiazoles and 2-substituted naphtho[2,1-d]yhiazoles from N-substituted arylamines and elemental sulfur has been developed under metal-free conditions. The reaction underwent the process of double C-Sbonds formation through C-H bonds functionalization.
N‐alkylation reaction of aromatic amines was achieved using aliphatic, aromatic, and heteroaromatic alcohols as the alkylating reagent. A variety of aniline derivatives, including heteroaromatic amines, underwent the N‐alkylation reaction and furnished the corresponding monoalkylated products in good to excellent yields. The application of the reaction is also further demonstrated by the synthesis of a 2‐phenylquinoline
Coordination and Catalytic Activity of Ruthenium Complexes Containing Tridentate P,N,O Ligands
作者:Chun‐Chin Lee、Wan‐Yi Chu、Yi‐Hong Liu、Shie‐Ming Peng、Shiuh‐Tzung Liu
DOI:10.1002/ejic.201100647
日期:2011.11
(5). However, complexation of PNO-Me with [RuCl2(CO)3(THF)] (THF = tetrahydrofuran) provided a mixture of [P,N-(PNO-Me)Ru(CO)2Cl2] (6) and 4 because O-demethylation took place during the reaction. All of the RuII complexes have been characterized by elemental analysis and spectroscopic techniques, as well as X-ray crystal structural analysis for 2, 4 and 6. The ruthenium complexes investigated in
In(OTf)<sub>3</sub>-Catalyzed Synthesis of 2,3-Dihydro-1<i>H</i>-benzo[<i>e</i>]indoles and 2,3-Dihydrobenzofurans via [3 + 2] Annulation
作者:Shuxuan Liu、Yu Zang、Hai Huang、Jianwei Sun
DOI:10.1021/acs.orglett.0c02729
日期:2020.11.6
An In(OTf)3-catalyzed intermolecular [3 + 2] annulation for the synthesis of 2,3-dihydro-1H-benzo[e]indoles and 2,3-dihydrobenzofurans from readily available substrates has been achieved. This approach takes advantage of oxetane and para-quinone methide as important functional units in the key intermediate. β-Naphthylamines and phenols have been demonstrated as excellent reaction partners.
已实现了一种由In(OTf)3催化的分子间[3 + 2]环合反应,用于从易于获得的底物中合成2,3-二氢-1 H-苯并[ e ]吲哚和2,3-二氢苯并呋喃。该方法利用氧杂环丁烷和对苯二甲酰甲烷作为关键中间体中的重要功能单元。β-萘胺和苯酚已被证明是极好的反应伴侣。
Solvent- and catalyst-free direct reductive amination of aldehydes and ketones with Hantzsch ester: synthesis of secondary and tertiary amines
作者:Quynh Pham Bao Nguyen、Taek Hyeon Kim
DOI:10.1016/j.tet.2013.04.046
日期:2013.6
A facile and rapid method for the parallel synthesis of a series of secondary and tertiary amines by the direct reductiveamination of aldehydes and ketones with Hantzsch ester under solvent- and catalyst-free has been developed. The scope and limitation of this method are described.