92646-08-7Relevant academic research and scientific papers
Carbon annulation of ortho-vinylanilines with dimethyl sulfoxide to access 4-aryl quinolines
Yuan, Jin,Yu, Jin-Tao,Jiang, Yan,Cheng, Jiang
, p. 1334 - 1337 (2017)
A palladium-catalyzed annulation of ortho-vinylanilines with dimethyl sulfoxide was developed to access 4-aryl quinolines in moderate to good yields. Activated by 1,4-diazabicyclo[2.2.2]octane bis(sulfur dioxide) adduct (DABSO), DMSO served as a “=CH-” fragment in this transformation. It represents a facile pathway leading to 4-aryl quinolines.
Cleavage of C-C Bonds for the Synthesis of C2-Substituted Quinolines and Indoles by Catalyst-Controlled Tandem Annulation of 2-Vinylanilines and Alkynoates
Ni, Jixiang,Jiang, Yong,An, Zhenyu,Yan, Rulong
supporting information, p. 1534 - 1537 (2018/03/23)
The strategy for the synthesis of C2-substituted indoles and quinolines from 2-vinylanilines and alkynoates through C-C bond cleavage is developed. With these general methods, 2-substituted indoles and quinolines can be accessed via tandem Michael addition and cyclization with no requirement of oxidant. This strategy not only provides a method for the synthesis C2-substituted indoles in good yields through the simultaneous cleavage of C=C and C=C bonds under metal-free conditions but also provides a simple method for the generation of the C2-substituted quinolines in moderate yields via Pd-catalyzed C=C bond cleavage.
Copper-mediated intramolecular aza-Wacker-type cyclization of 2-alkenylanilines toward 3-aryl indoles
Yang, Rui,Yu, Jin-Tao,Sun, Song,Zheng, Qingheng,Cheng, Jiang
supporting information, p. 445 - 448 (2017/01/11)
A copper-mediated intramolecular aza-Wacker-type cyclization was developed for the direct and efficient synthesis of 3-aryl indoles using 2-alkenylanilines in moderate to good yields with good functional group compatibility. This strategy shows the high efficiency, operational simplicity as well as broad substrate scope.
Tert -Butyl nitrite (TBN) as the N atom source for the synthesis of substituted cinnolines with 2-vinylanilines and a relevant mechanism was studied
Pang, Xiaobo,Zhao, Lianbiao,Zhou, Dagang,He, Ping Yong,An, Zhenyu,Ni, Ji Xiang,Yan, Rulong
supporting information, p. 6318 - 6322 (2017/08/10)
A green method to synthesize cinnolines by 6π electrocyclic reaction with alkenyl amines and TBN has been developed. TBN plays a dual role both as a nitrogen atom source and an oxidant in this procedure. Relevant mechanism experiments reveal that the reaction proceeds through electrocyclic reaction and with diazo hydroxide as a key intermediate.
Intramolecular addition of triarylmethanes to alkynes promoted by KOtBu/DMF: A synthetic approach to indene derivatives
Chen, Yan-Yan,Chen, Zhen-Yu,Zhang, Niu-Niu,Chen, Jia-Hua,Zhang, Xue-Jing,Yan, Ming
, p. 599 - 606 (2016/02/19)
A method for the intramolecular addition of triarylmethanes to alkynes has been developed. The reaction was efficiently promoted by KOtBu/DMF without any transition-metal catalyst. A variety of indene derivatives were prepared in moderate to good yields. A cascade cyclization of 2-alkyl-substituted substrates at elevated reaction temperature gave bicyclic indene derivatives. The reaction is proposed to proceed through the generation of a triphenylmethyl radical. Indene derivatives were prepared by the intramolecular addition of triarylmethanes to alkynes promoted by KOtBu/DMF. A cascade cyclization of 2-alkyl-substituted substrates at elevated reaction temperature gave bicyclic indene derivatives. A free-radical reaction mechanism is proposed.
SAR studies of 6-(arylamino)-4,4-disubstituted-1-methyl-1,4-dihydro-benzo[d][1,3]oxazin-2-ones as progesterone receptor antagonists
Kern, Jeffrey C.,Terefenko, Eugene A.,Fensome, Andrew,Unwallla, Ray,Wrobel, Jay,Zhu, Yuan,Cohen, Jeffrey,Winneker, Richard,Zhang, Zhiming,Zhang, Puwen
, p. 189 - 192 (2007/10/03)
We previously disclosed that 6-aryl benzoxazin-2-ones were PR modulators. In a continuation of this work we examined the SAR of new 6-arylamino benzoxazinones and found the targets 1-25, with an extra amino linker between the pendent 6-aryl groups and ben
Convenient synthesis of fluorinated quinoline, 1,2-dihydroquinoline, and 1,2,3,4-tetrahydroquinoline derivatives
Yanai, Hikaru,Mimura, Hideyuki,Kawada, Kosuke,Taguchi, Takeo
, p. 2153 - 2160 (2007/10/03)
A convenient synthetic method for 2-polyfluoroalkylated quinoline systems through the efficient generation of perfluoroalkylated imine from o-vinylanilines with perfluorinated hemiacetals or aldehyde hydrates was developed. In most cases, the major produc
