trans-isomer, while cis-and α-products are formed in lower yields. In some cases the stannyl alkenols can be further hydrostannated to give distannyl alkanols. 13C and 119Sn NMR data for the organotin compounds are presented and discussed.
1-炔醇的氢化锡锡以良好的产率导致形成相应的三有机锡烷基烯醇。主要产物是反式异构体,而顺式和α型产物的产率较低。在某些情况下,可以进一步氢化锡烷基醇,以得到二锡烷基醇。给出并讨论了有机锡化合物的13 C和119 Sn NMR数据。
Studies in group IV organometallic chemistry
作者:A.J. Leusink、H.A. Budding、J.W. Marsman
DOI:10.1016/s0022-328x(00)83730-4
日期:1967.8
Organotin monohydrides were brought into reaction with a variety of mono- and disubstituted ethynes. The identity of the resulting products was established by means of elementary analysis, infrared absorption spectroscopy and proton magnetic resonance spectroscopy.
Palladium catalyzed coupling of organostannanes with vinyl epoxides
作者:David R. Tueting、Antonio M. Echavarren、J.K. Stille
DOI:10.1016/0040-4020(89)80010-9
日期:1989.1
The coupling reaction of organotin reagents with vinyl epoxides, catalyzed by palladium, takes place at ambient temperatures, regioselectively, giving predominately the 1,4-addition product. Both aryl- and vinylstannanes undergo coupling in high yields, while acetylenic, allylic and benzylic tin reagents either give low yields or fail to couple. Although the double bond geometry in the vinylstannane
Effects of organometals on the palladium-catalyzed tandem carbopalladation-cross coupling for preparing stereodefined exocyclic alkenes
作者:Ei-ichi Negishi、Yumiki Noda、Frédéric Lamaty、Edward J. Vawter
DOI:10.1016/s0040-4039(00)97630-5
日期:1990.1
The reaction of ω-(o-iodoaryl)- and ω-(-β-iodoalkenyl)alkynes with organometals containing Zr, Sn, Al, or B in the presence of a catalytic amount of a palladium-phosphine complex, such as Pd(PPh3)4, proceeds predominantly via initial cycliccarbopalladation followed by cross coupling, whereas the corresponding reaction of organozincs tends to be dominated by direct cross coupling.
Pd-Mediated cross-coupling of aryl, alkenyl, and alkynyl stannanes with chiral 2-bromo oxazolines
作者:A.I Meyers、Katherine A Novachek
DOI:10.1016/0040-4039(96)00165-7
日期:1996.3
Chiral 2-bromo-2-oxazolines couple with appropriately substituted organostannanes mediated by Pd-catalysts to furnish 2-substituted oxazolines in good to moderate yields.