It may be assumed that the oxidation occurs via an intermediate enolate giving rise to an allylic
159 SPRINZ J,TETRAHEDR L,vol 0035,page 1523,1994,cites= 35,CATALYSIS OF ALLYLIC
SUBSTITUTIONS BY PD COMPLEXES OF OXAZOLINES CONTAINING AN ADDITIONAL P, S, OR SE CENTER - X-RAY CRYSTAL-STRUCTURES AND SOLUTION STRUCTURES OF CHIRAL PI-ALLYL PALLADIUM COMPLEXES OF PHOSPHINOARYLOXAZOLINES
Chemical interpretation of the crosslinking mechanism indicated that mainly the allylic
EVA radical undergoes self-recombination along with a minor amount of PPE radicals grafted on EVA.
The Zn-accelerator complex interact with sulfur or sulfur donors to form the very active sulfurating agent, which reacts with allylic
sites of rubber chains to form increased number of crosslink precursors (24).
The development of super tackifiers offers the compounder a potential avenue for also achieving reinforcement via a possible controlled curing system due to the presence of vinyl structures comprising allylic
66 (bs, 3 H, allylic
protons and AA main chain); d 2.
Chapter topics include alkylation and allylation adjacent to a carbonyl group, asymmetric alkylation or aminatin of allylic
esters, Suzuki, Beck and Sonogashira coupling reactions, cross-coupling reactions, regioselective or asymmetric 1,2-addition to aldehydes, olefin metathesis reactions, cyclization reactions, asymmetric aldol and Michael reactions, and steroeselective hydroformylation, carbonylation and carboxylation reactions.
The reactions of allylic
boronates such as 12 with aldehydes proceed in a stereocontrolled fashion to set two new stereocentres remote from the initial one, with high levels of selectivity.
You have just added foods rich in phytochemicals like lignans, lycopene, allylic
sulphides and antioxidants like Vitamins C and E, all known to reduce risk of cancers.
Lyondell Chemical is developing a line of acrylic polyols with superior crosslinking ability and low VOCs for polyurethane coatings, based on allylic
alcohols instead of hydroxyfunctional acrylates.
Living cells are constantly exposed to reactive oxygen species, some of which are capable of initiating lipid peroxidation by abstraction of an allylic
proton from a polyunsaturated fatty acid.
8] + Mechanical mixing NA NA accelerators + by open roll mill, ZnO + stearic internal mixers, acid [right and/or extruders arrow] soluble ai T < sulphurate zinc 100[degrees] C complex (A) + polydiene elastomers (P) (a) [MATHEMATICAL Allylic