130248-74-7Relevant academic research and scientific papers
Reverse engineering of conjugated microporous polymers: Defect structures of tetrakis(4-ethynylphenyl)stannane networks
Uptmoor, Andrea C.,Freudenberg, Jan,Schw?bel, S. Thimon,Paulus, Fabian,Rominger, Frank,Hinkel, Felix,Bunz, Uwe H. F.
, p. 14673 - 14676 (2015)
Two different conjugated microporous polymers (CMPs) based on tetrakis(4-ethynylphenyl)stannane as the repeating unit were synthesized and their BET surfaces and thermal properties were investigated. The first direct method to elucidate the molecular structure of the organic linkers between the tin centers by digestion of the CMP is described. Selective cleavage of the tin-carbon bonds with chloroacetic acid afforded the isolated bridging units and provided insight into the surprisingly varied chemical composition of these networks. Burn your bridges: Two different conjugated microporous polymers (CMPs) based on tetrakis(4-ethynylphenyl)stannane as the repeating unit were synthesized and characterized. Selective cleavage of the tin-carbon bonds with chloroacetic acid affords the isolated bridging units, thereby providing insight into the structure of the organic linkers and the surprisingly varied chemical composition of these networks.
Ligand-Controlled Regiodivergent Nickel-Catalyzed Hydrocyanation of Silyl-Substituted 1,3-Diynes
Sun, Feilong,Yang, Chengxi,Ni, Jie,Cheng, Gui-Juan,Fang, Xianjie
supporting information, p. 4045 - 4050 (2021/05/26)
A regiodivergent nickel-catalyzed hydrocyanation of 1-aryl-4-silyl-1,3-diynes is reported. When appropriate bisphosphine and phosphine-phosphite ligands are applied, the same starting materials can be converted into two different enynyl nitriles with good
Unraveling the Mechanism of 1,3-Diyne Cross-Metathesis Catalyzed by Silanolate-Supported Tungsten Alkylidyne Complexes
Schnabel, Tobias M.,Melcher, Daniel,Brandhorst, Kai,Bockfeld, Dirk,Tamm, Matthias
supporting information, p. 9022 - 9032 (2018/06/29)
The benzylidyne complex [PhC≡W{OSi(OtBu)3}3] (1) catalyzed the cross-metathesis between 1,4-bis(trimethylsilyl)-1,3-butadiyne (2) and symmetrical 1,3-diynes (3) efficiently, which gave access to TMS-capped 1,3-diynes RC≡C?C≡CSiMesub
Syntheses of trifluoroethylated unsymmetrical 1,3-diynes by using 1,1-dichloro-2,2,2-trifluoroethane
Zheng, Jian,Chen, Qing-Yun,Sun, Ke,Huang, Yangen,Guo, Yong
supporting information, p. 5757 - 5760 (2016/12/06)
Copper-mediated reaction of terminal 1,3-diynes with 1,1-dichloro-2,2,2-trifluoroethane (CF3CHCl2) using ethanolamine as ligand gave trifluoroethylated unsymmetrical 1,3-diynes in moderate to good yields. The reaction were carried out under mild conditions, and were easy to operate. Aryl groups with weak electron-withdrawing group or electron-donating group, and alkyl substitutents at terminal 1,3-diynes were tolerated. Synthesis of a trifluoroethylated conjugated triyne by using this method was demonstrated. Further transformation of the trifluoroethylated unsymmetrical 1,3-diyne to provide trifluoroethyl-substituted 1,2,3-triazole and isoxazole as application examples were successfully realized.
A co-operative Ni-Cu system for Csp-Csp and Csp-Csp2 cross-coupling providing a direct access to unsymmetrical 1,3-diynes and en-ynes
Mukherjee, Nirmalya,Kundu, Debasish,Ranu, Brindaban C.
supporting information, p. 15784 - 15787 (2015/01/08)
An efficient cross-coupling of alkynes with alkynyl and alkenyl halides catalysed by a Ni-Cu system without any ligand has been achieved. The reaction is suggested to proceed by Ni(0) catalysis assisted by Cu(i). A series of functionalised diaryl, aryl-alkyl, aryl-heteroaryl, diheteroaryl 1,3-di-ynes and en-ynes are obtained in high yields.
Air-stable (phenylbuta-1,3-diynyl)palladium(II) complexes: Highly active initiators for living polymerization of isocyanides
Xue, Ya-Xin,Zhu, Yuan-Yuan,Gao, Long-Mei,He, Xiao-Yue,Liu, Na,Zhang, Wu-Yi,Yin, Jun,Ding, Yunsheng,Zhou, Hongping,Wu, Zong-Quan
supporting information, p. 4706 - 4713 (2014/04/17)
A family of air-stable (phenylbuta-1,3-diynyl)palladium(II) complexes were designed and prepared in a facile synthetic procedure. Their structures were characterized by 1H and 13C NMR, MS, and X-ray analysis. These Pd complexes were
Synthesis, photophysics and excited state structure of 1,8-di(p-tolyl)-1,3, 5,7-octatetrayne
Deperasińska,Szemik-Hojniak,Osowska,Rode,Szczepanik,Wi?niewski, ?.,Lis,Szafert
experimental part, p. 299 - 307 (2011/10/17)
The Cadiot-Chodkiewicz type C2-elongation of p-tolylacetylene followed by dimerization of the resulted diyne p-CH3C 6H4(C≡C)2TMS (1) gave thermally stable octatetrayne p-CH3C6Hs
A new synthesis of substituted fulvenes
Lee, Gary C. M.,Tobias, Brian,Holmes, Judy M.,Harcourt, Dale A.,Garst, Michael E.
, p. 9330 - 9336 (2007/10/02)
A new fulvene synthesis results from the palladium-catalyzed [2 + 2 + 2] annulation of 1 mol of a β-substituted vinyl iodide and 2 mol of a monosubstituted acetylene. This variant of the Heck reaction tolerates a wide range of substrate substituents with
