Copper-Catalyzed Radical Reaction of <i>N</i>-Tosylhydrazones: Stereoselective Synthesis of (<i>E</i>)-Vinyl Sulfones
作者:Shuai Mao、Ya-Ru Gao、Xue-Qing Zhu、Dong-Dong Guo、Yong-Qiang Wang
DOI:10.1021/acs.orglett.5b00461
日期:2015.4.3
radical reaction to synthesize vinylsulfones from readily available N-tosylhydrazones has been described. The protocol provides a novel strategy for the synthesis of various vinylsulfones including α, β-disubstituted ones and terminal ones. The advantages of the transformation include excellent E stereoselectivity, broad substrate scope, low cost of reagents, and convenient operation. A novel and efficient
Iron‐Promoted Domino Dehydrogenative Annulation of Deoxybenzoins and Alkynes Leading to β‐Aryl‐α‐Naphthols
作者:Xue‐Qing Zhu、Rui‐Li Guo、Xing‐Long Zhang、Ya‐Ru Gao、Qiong Jia、Yong‐Qiang Wang
DOI:10.1002/adsc.202000625
日期:2020.8.4
A strategy for synthesis of β‐aryl‐α‐naphthols has been established through an iron‐promoted domino C(sp 3)−H/C(sp )−H and C(sp 2)−H/C(sp )−H dehydrogenative coupling of deoxybenzoins and alkynes. The synthesis uses inexpensive materials with a broad substrate scope and features simple operations with excellent regioselectivity. This study provides an alternative access to various β‐aryl‐α‐naphthols
Synthesis of 2-Acylthiophenes by Palladium-Catalyzed Addition of Thiophenes to Nitriles
作者:Tao-Shan Jiang、Guan-Wu Wang
DOI:10.1002/adsc.201300843
日期:2014.2.10
AbstractA direct synthesis of 2‐acylthiophenes has been developed through palladium‐catalyzed addition of thiophenes to nitriles. The reaction proceeded well under the palladium(II) acetate/2,2′‐bipyridine system and using D‐(+)‐camphorsulfonic acid as the additive. In addition, the obtained 2‐acylthiophenes could undergo further coupling reactions to generate novel products.magnified image
Rh-Catalyzed Conversion of 3-Diazoindolin-2-imines to 5<i>H</i>-Pyrazino[2,3-<i>b</i>]indoles with Photoluminescent Properties
作者:Hualong Ding、Zaibin Wang、Songlin Bai、Ping Lu、Yanguang Wang
DOI:10.1021/acs.orglett.7b03211
日期:2017.12.15
A rhodium-catalyzed reaction between 3-diazoindolin-2-imines and 2H-azirines, followed by treatment with a base, furnishes 5H-pyrazino[2,3-b]indoles in excellent yields. A number of functional groups tolerate the reaction conditions, and the resulting 5H-pyrazino[2,3-b]indoles present strong photoluminecence in solutions, powders, and films.
KUMAR, G.;RAJAGOPALAN, K.;SWAMINATHAN, S.;BALASUBRAMANIAN, K. K., INDIAN J. CHEM., 1981, 20, N 4, 271-274
作者:KUMAR, G.、RAJAGOPALAN, K.、SWAMINATHAN, S.、BALASUBRAMANIAN, K. K.