Significant Enhancement of the Stille Reaction with a New Combination of Reagents—Copper(I) Iodide with Cesium Fluoride
作者:Simon P. H. Mee、Victor Lee、Jack E. Baldwin
DOI:10.1002/chem.200401162
日期:2005.5.20
The combination of copper(I) iodide and cesiumfluoridesignificantlyenhances the Stillereaction. After extensive optimisation, a variety of electronically unfavourable and sterically hindered substrates were coupled in very high yields under mild conditions.
Lithiation of 3,4-bis(tri-n-butylstannyl)furan: regiospecific synthesis of unsymmetrical 3,4-disubstituted furans
作者:Yun Yang、Henry N. C. Wong
DOI:10.1039/c39920001723
日期:——
3-(Tri-n-butylstannyl)-4-lithiofuran 2, obtained through tin–lithium exchange from 3,4-bis(tri-n-butylstannyl)furan 1, reacts regiospecifically with various electrophiles to give monosubstituted stannylfurans, which are converted into unsymmetrical 3,4-disubstituted furans utilising Stille's palladium-catalysed coupling reactions.
Total synthesis of 5,5′,6,6′-tetrahydroxy-3,3′-biindolyl, the proposed structure of a potent antioxidant found in beetroot (Beta vulgaris)
作者:Simon P.H Mee、Victor Lee、Jack E Baldwin、Andrew Cowley
DOI:10.1016/j.tet.2004.02.043
日期:2004.4
5,5',6,6'-Tetrahydroxy-3,3'-biindolyl, the proposed structure of a phenolic antioxidant isolated from the red beetroot (Beta vulgaris), has been synthesised. The spectroscopic data of the synthetic material is not consistent with that reported for the natural product. (C) 2004 Published by Elsevier Ltd.
Regiospecific synthesis of 3,4-disubstituted furans and 3-substituted furans using 3,4-Bis(tri-n-butylstannyl)furan and 3-(tri-n-butylstannyl)f
作者:Yun Yang、Henry N.C. Wong
DOI:10.1016/s0040-4020(01)85528-9
日期:1994.1
3,4-Bis(tri-n-butylstannyl)furan and 3-(tri-n-butylstannyl)furan have been prepared and used successfully as building blocks to lead to various
3,4-Bis(tributylstannyl)furan: a versatile building block for the regiospecific synthesis of 3,4-disubstituted furans
作者:Yun Yang、Henry N. C. Wong
DOI:10.1039/c39920000656
日期:——
By utilising an oxazole–alkyne Diels–Alder reaction, 3,4-bis(tributylstannyl)furan is prepared and its synthetic potential assessed by its conversion into several 3,4-disubstituted furans via Stille-type palladium-catalysed reactions.