5905-00-0Relevant articles and documents
METHOD FOR PRODUCING HETEROLE MULTIMER
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Paragraph 0033, (2020/03/03)
PROBLEM TO BE SOLVED: To provide a method for producing a heterole multimer at low cost and in high yields. SOLUTION: A method for producing a heterole multimer has a deprotonation step in which, in the presence of a deprotonation agent and a deprotonation promoter for heteroles, heteroles are deportonated, and a coupling step in which the deprotonated heteroles form a carbon-carbon bond. SELECTED DRAWING: None COPYRIGHT: (C)2020,JPOandINPIT
Palladium-catalyzed reductive homocoupling of aryl sulfonates via cleavage of C─O bond at room temperature
Zhong, Shuangling,Chen, Mengxin,Liu, Ge,Sun, Chenggang,Liu, Wencong
, (2017/09/01)
Palladium-catalyzed reductive homocoupling of aryl sulfonates has been successfully achieved under mild conditions. This transformation is a new method for the homocoupling reaction of aryl sulfonates at room temperature via the cleavage of C─O bonds, thus providing an alternative synthesis of symmetric biaryls. The reported reductive homocoupling reaction is tolerant of many common functional groups regardless of electron-donating or electron-withdrawing nature, making this newly developed transformation important for complementing Ullmann coupling. Experimental Section. Typical procedure for the products.
Bifurans via palladium-catalyzed Suzuki coupling
Zhang, Jun,Ye, Peijun,He, Lu,Yuan, Ting,Liu, Qiancai
, p. 2190 - 2196 (2015/12/12)
Sixteen 2,2'-bifurans with aryl substituents are reported. The copper-mediated oxidative coupling of lithium salt of furan led to the formation of 2,2'-bifuran, which was brominated with either 2 eq. or 4 eq. NBS to afford 5,5'-dibromo-2,2'-bifuran and 3,3',5,5'-tetrabromo-2,2'-bifuran. The palladiumcatalyzed Suzuki reactions between dibromo or tetrabormo-bifuran and arylboronic acid were employed to furnish the title compounds, which were characterized by NMR spectra and mass spectra.