2972-85-2Relevant academic research and scientific papers
A [5 + 1] annulation strategy for the synthesis of multifunctional biaryls and: P -teraryls from 1,6-Michael acceptor ketene dithioacetals
Althagafi, Ismail,Elagamy, Amr,Kumar, Abhinav,Pratap, Ramendra,Shally,Shaw, Ranjay
, p. 6407 - 6417 (2020/09/07)
A new type of ketene dithioacetal, 2-(3,3-bis-methylsulfanyl-1-arylallylidene)malononitriles containing 1,4 and 1,6-Michael acceptors, were synthesized to study their reactivity for the synthesis of a new molecular entity. We report a [5 + 1] annulation s
Transition metal free synthesis of multifunctional thiomethylated-benzenes from aryl/heteroaryl/cyclopropyl methyl ketones
Panwar, Rahul,Althagafi, Ismail,Shally,Shaw, Ranjay,Elagamy, Amr,Shah, Chandan,Yadav, Pratik,Pratap, Ramendra
, (2020/04/28)
A base-promoted strategic synthesis of various functionalized thiomethylated-benzenes has been established from aryl/heteroaryl/cyclopropyl methyl ketone. We can directly access the thiomethylated-benzene nucleus embedded with diverse functional group by
"on Water" Direct Catalytic Vinylogous Aldol Reaction of Silyl Glyoxylates
Pan, Hong,Han, Man-Yi,Li, Pinhua,Wang, Lei
, p. 14281 - 14290 (2019/11/03)
The unique reactivity of water in the direct catalytic vinylogous aldol reaction of silyl glyoxylates is reported. With the hydrogen-bonding networks from water, the unfavorable homogeneous reactions in organic solvents were severely suppressed, and the "
Chemoselective synthesis of m-teraryls through ring transformation of 2 H-pyran-2-ones by 2-(1-arylethylidene)-malononitriles
Panwar, Rahul,Shally,Shaw, Ranjay,Elagamy, Amr,Pratap, Ramendra
, p. 8994 - 9002 (2018/12/10)
We have developed a simple, efficient and chemoselective approach for the synthesis of m-teraryls by the reaction of 6-aryl-2-oxo-4-(sec.amino)-2H-pyran-3-carbonitriles and 2-(1-arylethylidene)malononitriles under basic conditions. We used 6-aryl-2-oxo-4-
Syntheses of donor-acceptor-functionalized dihydroazulenes
Broman, Soren Lindbaek,Jevric, Martyn,Bond, Andrew D.,Nielsen, Mogens Brondsted
, p. 41 - 64 (2014/01/17)
The dihydroazulene (DHA)/vinylheptafulvene (VHF) photo/thermoswitch has been of interest for use in molecular electronics and advanced materials. The switching between the two isomers has previously been found to depend strongly on the presence of donor a
Phosphine-catalyzed domino reaction: A novel sequential [2+3] and [3+2] annulation reaction of γ-substituent allenoates to construct bicyclic[3, 3, 0]octene derivatives
Li, Erqing,Huang, You
supporting information, p. 948 - 950 (2014/01/06)
We have successfully developed a novel and efficient phosphine-catalyzed sequential [2+3] and [3+2] annulation reaction of γ-substituent allenoates to construct bicyclic[3, 3, 0]octene derivatives. The protocol uses readily available γ-substituent allenoa
A catalytic asymmetric hetero-Diels-Alder reaction of olefinic azlactones and isatins: Facile access to chiral spirooxindole dihydropyranones
Gao, Tai-Ping,Lin, Jun-Bing,Hu, Xiu-Qin,Xu, Peng-Fei
supporting information, p. 8934 - 8936 (2014/08/05)
A catalytic asymmetric hetero-Diels-Alder (HDA) reaction has been achieved through hydrogen-bond directed γ-addition of olefinic azlactones to isatins. This methodology provides an efficient access to spirooxindole dihydropyranones in moderate to good yie
Solventless convenient synthesis of new cyano-2-aminopyridine derivatives from enaminonitriles
Villemin, Didier,Belhadj, Zahira,Cheikh, Nawel,Choukchou-Braham, Noureddine,Bar, Nathalie,Lohier, Jean-Fran?ois
, p. 1664 - 1668 (2013/03/28)
A synthesis of novel 4-substituted-3-cyano-2-aminopyridines using enaminonitriles and various primary amines was established under microwave irradiation and solvent-free conditions. Structures of the new compounds were characterized by IR, MS, 1/sup
[5C + 1N] Annulation of 2,4-pentadienenitriles with hydroxylamine: A synthetic route to multi-substituted 2-aminopyridines
Xin, Xiaoqing,Huang, Peng,Xiang, Dexuan,Zhang, Rui,Zhao, Fengyu,Zhang, Ning,Dong, Dewen
, p. 1001 - 1006 (2013/02/26)
A facile and efficient synthetic route to multi-substituted 2-aminopyridines has been developed via a formal [5C + 1N] annulation of readily available 2,4-pentadienenitriles with hydroxylamine (NH2OH) under very mild conditions, which involves
Synthesis of thieno[2,3-b]quinolinone derivatives
Han, Guang-Fan,Wang, Ming,Chen, Li-Zhuang,Hu, Xiao-Lei
, p. 909 - 912 (2012/10/29)
The Knoevenagel reactions of malononitrile with acetophenone or 4-substituted acetophenons were carried to give the corresponding 2-(1-aryle thylidene)malononitriles, which was further cyclized with sulfur using NaHCO3 as catalysts to generate
