401514-46-3Relevant academic research and scientific papers
Visible-Light-Promoted Formation of C—C and C—P Bonds Derived from Evolution of Bromoalkynes under Additive-Free Conditions: Synthesis of 1,1-Dibromo-1-en-3-ynes and Alkynylphosphine Oxides
Xu, Hailong,Chen, Rui,Ruan, Hongjie,Ye, Ruyi,Meng, Ling-Guo
supporting information, p. 873 - 878 (2021/03/04)
The controllable achievement of C—C and C—P bond formations is developed via visible-light-promoted bromoalkyne dimerization or its further transformation with secondary phosphine oxides. The 1,1-dibromo-1-en-3-ynes are formed when bromoalkyne is exposed to visible-light. While alkynylphosphine oxides are generated when bromoalkynes are mixed with secondary phosphine oxides.
Gold(III)-catalyzed chemoselective annulations of anthranils with N-allylynamides for the synthesis of 3-azabicyclo[3.1.0]hexan-2-imines
Song, Lina,Tian, Xianhai,Rudolph, Matthias,Rominger, Frank,Hashmi, A. Stephen K.
supporting information, p. 9007 - 9010 (2019/08/01)
We herein report the gold(iii)-catalyzed selective annulation of anthranils with N-allylynamides under mild conditions. By trapping the in situ-generated α-imino gold carbenes, 3-azabicyclo[3.1.0]hexan-2-imines were obtained in high synthetic efficiency. The reaction, which can be conducted in the gram scale, tolerates electron-rich and electron-deficient anthranils as well as a diverse set of functionalized ynamides (aryl- and alkyl-substituted terminal).
Copper-catalyzed N-alkynylations of sulfoximines with bromoacetylenes
Chen, Xiao Yun,Wang, Long,Frings, Marcus,Bolm, Carsten
supporting information, p. 3796 - 3799 (2014/08/05)
N-Alkynylated sulfoximines have been obtained by copper-catalyzed cross-coupling reactions starting from NH-sulfoximines and bromoacetylenes in moderate to good yields. The reaction conditions are mild, and the substrate scope is wide.
Gold-catalyzed intermolecular oxidation of o-alkynylbiaryls: An easy and practical access to functionalized fluorenes
Pan, Fei,Liu, Shuang,Shu, Chao,Lin, Rong-Kun,Yu, Yong-Fei,Zhou, Jin-Mei,Ye, Long-Wu
, p. 10726 - 10729 (2014/10/15)
A novel gold-catalyzed intermolecular oxidation of o-alkynylbiaryls has been developed. A variety of functionalized fluorenes are readily accessed by utilizing this non-diazo approach, thus providing a viable alternative to synthetically useful fluorenes. This journal is the Partner Organisations 2014.
Catalytic electrophilic halogenation of silyl-protected and terminal alkynes: Trapping gold(I) acetylides vs. a Bronsted acid-promoted reaction
Starkov, Pavel,Rota, Filippo,D'Oyley, Jarryl M.,Sheppard, Tom D.
supporting information, p. 3217 - 3224 (2013/01/15)
In the presence of a cationic gold(I) catalyst and N-halosuccinimide, both trimethylsilyl-protected and terminal alkynes are converted into alkynyl halides. Further experiments showed that silyl-protected alkynes undergo electrophilic iodination and bromination under Bronsted acid catalysis, whilst terminal alkynes require a cationic gold catalyst. The former reactions probably proceed via activation of the electrophile, whilst the latter reactions proceed via a gold(I) acetylide intermediate. Gold-catalysed halogenation was further combined with gold-catalysed hydration and subsequent annulation to provide convenient routes to iodomethyl ketones and five-membered aromatic heterocycles. Copyright
A sequential metal-catalyzed C-N bond formation in the synthesis of 2-amido-indoles
Yao, Pei-Yuan,Zhang, Yu,Hsung, Richard P.,Zhao, Kang
supporting information; experimental part, p. 4275 - 4278 (2009/05/30)
(Chemical Equation Presented) A sequential metal-catalyzed C-N bond formation employing ortho-haloaryl acetylenic bromides is described. The initial amidation is highly selective for C8P-N bond formation, leading to o-haloaryl-substiluted ynami
A novel synthesis of β,β-dibromostyrenes
Shastin,Korotchenko,Nenajdenko,Balenkova
, p. 2081 - 2084 (2007/10/03)
A new simple and efficient transformation of aromatic aldehydes to β,β-dibromostyrenes and arylbromoacetylenes is described. The olefination procedure was conducted under mild conditions and in good yields.
