In these systems the lowest energy isomers have bridging ligands derived from the alkyne in which one or two hydrogen atoms have migrated from a methyl group to one or both of the alkyne carbon atoms. These bridging ligands include allene, manganallyl, and vinylcarbene ligands, the first two ...
Dynamics of Liquid Crystalline Side-Chain Poly(Vinyl Ether)s Segmental mobility between 100 and 350 K is reported for a series of mesomorphic side-chain poly(vinyl ether)s with 4–11 methylene carbon atoms in the spa... U.,W.,Gedde,... - 《Journal of Macromolecular Science Part A》 被...
† Allyl vinyl ether, 1898 * Allyldimethylarsine, 1977 Allyllithium, 1173 Allylmercury(II) iodide, 1169 1-Allyloxy-2,3-epoxypropane, 2428 N-Allylthiourea, 1595 † 3-Aminopropene, 1250 3-Azidopropene, 1184 † 3-Bromo-1-propene, 1149 † 1-Bromo-2-butene, 1543 1-Chloro-4-(2-nit...
Allyl indicates afunctional groupwith structural formula H2C=CH-CH2-R, where R is the rest of the molecule. It consists of methylene bridge (-CH2-) in between the vinyl group (-CH=CH2) and the rest of the molecule. Therefore, allyl group contains sp2hybridized vinyl carbon atoms and sp3...
Tsuji J,Minami I.New synthetic reactions of allyl alkyl carbonates, allyl.beta.-keto carboxylates, and allyl vinylic carbonates catalyzed by palladium complexes. Accounts of Chemical Research . 1987Tsuji, J.; Minami, I. "New Synthetic Reactions of Allyl Alkyl Carbonates, Allyl b-Keto Carboxylate...
On the other hand, Pd(PPh)and dppe revealed the nucleophilic nature of the dimetallic intermediates through sequential reactions of the carbon−metal bonds with dimethyl malonate. 关键词: FISCHER CARBENE COMPLEXES CATALYZED REACTIONS CINE-SUBSTITUTION PALLADIUM CYCLOPROPANATION METAL KETONES VINYL...
In order to perform cross-coupling selectively, and avoid homocoupling, the organic halides should be different in nature—it is impossible to perform by this method the routine aryl–aryl or vinyl–vinyl cross-couplings, because the homocoupling prevails.178 Instead, aryl or vinyl halides can be...
The addition of carbon tetrachloride to diethyl allyl- and vinylphosphonates giving good yields of the 1:1 addition products has been studied using transition metal salts with redox systems. This redox system offers several advantages when compared with ordinary initiation techniques. The preparation ...
To achieve( meth) acrylate UV-curing and thiol-ene photopolymerization combined in binary systems,vinyl monomers with high reactivity( meth) acryl carbon carbon double bonds and low radical reactivity( meth) allyl carbon carbon double bonds,specifically,methallyl acrylate,allyl acrylate and methallyl m...
Catalyzed by Pd(0), trialkylsilyltrialkylstannane (R(3)Si-SnR'(3)) reagents undergo highly selective additions to 1,2-dien-7-ynes and 1,2-dien-8-ynes to give 2-vinylalkylidenecyclopentanes with silicon and tin substituents on the double ... R Kumareswaran,S Shin,I Gallou,... - 《...