Mild and General Cross-Coupling of (α-Alkoxyvinyl)silanols and -silyl Hydrides
摘要:
[GRAPHICS](alpha-Alkoxyvinyl)silanols and (alpha-alkoxyvinyl)silyl hydrides are efficiently converted to aryl vinyl ethers by a palladium(0)-catalyzed cross-coupling reaction with aryl halides in the presence of tetrabutylammonium fluoride or hydroxide. Yields are generally high, and the reaction is compatible with a wide range of functional groups.
Regioselectivity Influences in Platinum-Catalyzed Intramolecular Alkyne O–H and N–H Additions
作者:Jeff P. Costello、Eric M. Ferreira
DOI:10.1021/acs.orglett.9b03557
日期:2019.12.20
The steric and electronic drivers of regioselectivity in platinum-catalyzed intramolecular hydroalkoxylation are elucidated. A branch point is found that divides the process between 5-exo and 6-endo selective processes, and enol ethers can be accessed in good yields for both oxygen heterocycles. The main influence arises from an electronic effect, where the alkyne substituent induces a polarization
Palladium-Catalyzed Cross-Coupling Reactions between Dihydropyranylindium Reagents and Aryl Halides. Synthesis of <i>C</i>-Aryl Glycals
作者:Ute Lehmann、Smita Awasthi、Thomas Minehan
DOI:10.1021/ol0345428
日期:2003.7.1
[reaction: see text] Palladium(0)-catalyzed cross-coupling reactions between tris(dihydropyranyl)indium 1 and aryl halides 2 have been investigated. Aryl iodides and electron-deficient aryl bromides couple efficiently with the in situ-generated indium reagents in the presence of 1-5 mol % Cl(2)Pd(PPh(3))(2) to produce substituted dihydropyrans 3 with minimal (<10%) dimer (4) formation. Organoindium
MACLEOD, DONALD;MOORCROFT, DAVID;QUAYLE, PETER;DORRITY, MICHAEL D. J.;MAL+, TETRAHEDRON LETT., 31,(1990) N2, C. 6077-6080
作者:MACLEOD, DONALD、MOORCROFT, DAVID、QUAYLE, PETER、DORRITY, MICHAEL D. J.、MAL+
DOI:——
日期:——
Mild and General Cross-Coupling of (α-Alkoxyvinyl)silanols and -silyl Hydrides
作者:Scott E. Denmark、Luc Neuville
DOI:10.1021/ol0064112
日期:2000.10.1
[GRAPHICS](alpha-Alkoxyvinyl)silanols and (alpha-alkoxyvinyl)silyl hydrides are efficiently converted to aryl vinyl ethers by a palladium(0)-catalyzed cross-coupling reaction with aryl halides in the presence of tetrabutylammonium fluoride or hydroxide. Yields are generally high, and the reaction is compatible with a wide range of functional groups.
The Pd(0)-catalysed coupling reactions of 2-(tri-n-butylstannyl)-3,4-dihydrofuran and -5,6-dihydropyran.
作者:Donald MacLeod、David Moorcroft、Peter Quayle、Michael R.J. Dorrity、John F. Malone、Gareth M. Davies