CCXXX.—Effects induced by the phenyl group. Part I. The addition of polar reagents to styrene and the behaviour of the halogenated ethylbenzenes 喜欢 0 阅读量: 4475 作者:F Ashworth,GN Burkhardt 摘要: No abstract available DOI: 10.1039/jr9280001791 被引量: 19 ...
By Addition to Polar Organometallics to Form Organoboratesdoi:10.1002/9780470145241.ch23boron hydridesboron?carbon bonds1-methyldiborane(6)mget borohydrideshydroborationH. C. BrownM. ZaidlewiczJohn Wiley & Sons, Ltd
- Addition (usually signified by the plus symbol +) is one of the four basic operations of arithmetic, the other three being subtraction, multiplication...- polar addition reactions: electrophilic addition and nucleophilic addition. Two non-polar addition reactions exist as well, called free-radical...
and drying of the aqueous copolymer dispersion obtainable thereby. One or more hydroxycarboxylic acids or the salts thereof are added to the aqueous copolymer dispersion in an amount of 3 to 40% by weight, based on the total weight of copolymer, before or during the polymerization or before th...
Let us mention that there does exist an equivalent of polar coordinates (magnitude and direction) in 3D called spherical coordinates. Nevertheless, they tend to be messy and are far less common in practice, so we skip them in our vector addition calculator. Still, you can learn more about th...
of their phenyl rings, perform well in this reaction, affording3-21with 90–99% isolated yields. All these reactions are essentially quantitative according to NMR data, and the slightly lower yields were mainly the result of purification steps necessitated by the highly polar triphenylphosphine ...
Most of alkenes are insoluble in such a polar medium as concentrated HBr, and water present in the reaction media causes the hydration reaction of the alkene to compete with the main reaction. This problem is avoided by using a phase-transfer catalyst, which improves the contact between the ...
Irina P.Beletskaya,Andrei V.Cheprakov, inJournal of Organometallic Chemistry, 2004 Oxidative additionis commonly believed to be very facile for aryl iodides and activated aryl bromides. With such substrates any form of Pd(0) is supposed to add to C–X bond under mild conditions, the ligand...
ME Deane,FJ Lalor - 《Journal of Organometallic Chemistry》 被引量: 5发表: 1973年 Dynamic, Reversible Oxidative Addition of Highly Polar Bonds to a Transition Metal The combination of Pt0 complexes and indium trihalides leads to compounds that form equilibria in solution between their In-X oxida...
tothemajorityofpolarcarbon-carbonbond-formingreactionsofvariousrepute,includingthevenerableMichaeladditionreaction,wheretheelectrophilic-CdXsite(1,2-addition)is“usurped”byaremoteconjugated-RCdCR-CdXposition(1,4-addition)(Scheme1,eq1).ThealdoladditionreactionandtherelatedMannichprocess,bothfundamentalpillarsof...