Synthesis and reactions of donor cyclopropanes: efficient routes to cis - and trans -tetrahydrofurans
作者:Jonathan Dunn、Adrian P. Dobbs
DOI:10.1016/j.tet.2015.05.007
日期:2015.9
A detailed study on the synthesis and reactions of silylmethylcyclopropanes is reported. In their simplest form, these donor-only cyclopropanes undergo Lewis acid promoted reaction to give either cis- or trans-tetrahydrofurans, with the selectivity being reaction condition-dependant. The adducts themselves are demonstrated to be an important scaffold for structural diversification. The combination
Kinetics of the reactions of allylsilanes, allylgermanes, and allylstannanes with carbenium ions
作者:Gisela Hagen、Herbert Mayr
DOI:10.1021/ja00013a035
日期:1991.6
isobutene/2k). A close analogy between the reactions of alkenes and allylelement compounds with carbeniumions is manifested, and the different reaction series are connected by well-behaved linear free energy relationships. The relative reactivities of terminal alkenes and allylelement compounds are almost independent of the electrophilicities of the reference carbeniumions (constant selectivity relationship)
SATURATED AND UNSATURATED SILAHYDROCARBONS VIA IRON AND COBALT PYRIDINE DIIMINE CATALYZED OLEFIN SILYLATION
申请人:Lewis Kenrick Martin
公开号:US20140330036A1
公开(公告)日:2014-11-06
The present invention relates to processes for the synthesis of saturated and unsaturated silahydrocarbons using iron-containing or cobalt-containing catalysts. The processes of the invention can produce tetraalkylsilanes, phenyltrialkylsilanes, substituted phenyltrialkylsilanes and their mixtures, which are useful as lubricants and hydraulic fluids, as well as alkyl alkenylsilanes, phenyl alkenylsilanes and substituted phenyl alkenylsilanes and their mixtures, which are useful in the synthesis of saturated silahydrocarbons and other organofunctional silanes.
studied. Substitution involving cleavage of equatorial SiO bonds is always observed. Silatranes exhibit reactivity quite different from that of analogous trialkoxysilanes or anionic pentacoordinatesiliconcompounds.