Loading...
  • water-soluble
  • Here we measure the bimolecular rate constants of the triplet excited state of benzophenone ( 3 BP * ), a model species, with 17 water-soluble C 3 -C 6 alkenes that have either been found in the atmosphere or are reasonable surrogates for identified species. (atmos-chem-phys-discuss.net)
  • monomers
  • Alkenes form monomers and then join together to form polymers to make plastic. (hubpages.com)
  • As stated above, the polymerization method of the present invention is particularly useful for forming copolymers of the normal mono-l-alkene with dissimilar, olefinica'llyunsaturated monomers which may exhibit faster addition polymerization rates than the comparatively slow polymerizing alpha-olefins. (google.com)
  • Hydroboration
  • Alkenes are prepared by the hydroboration of enamines followed by an elimination reaction to form the alkene. (freepatentsonline.com)
  • Cobalt complexes of iminopyridine-oxazoline (IPO) ligands can be applied to the asymmetric hydroboration of 1,1-disubstituted aryl alkenes to afford α-alkyl-β-pinacolatoboranes with exclusive regioselectivity in high yields with up to 99.5% ee. (organic-chemistry.org)
  • Stereoselective
  • Cresswell AJ, Eey STC, Denmark SE (2015) Catalytic, stereoselective dihalogenation of alkenes: challenges and opportunities. (springer.com)
  • Santi C, Di Lorenzo R, Tidei C, Bagnoli L, Wirth T (2012) Stereoselective selenium catalyzed dihydroxylation and hydroxymethoxylation of alkenes. (springer.com)
  • diastereocontrol
  • that exposure of 19 to BF 3 .OEt 2 generated a species that added to the alkene 13 with high diastereocontrol, to give 20 . (organic-chemistry.org)
  • the acetylenic ester 22 with N-benzylhydroxylamine to give a dipole, that added to the alkene 21 to give 23 , establishing a quaternary center with high diastereocontrol. (organic-chemistry.org)
  • This approach has achieved exquisite diastereocontrol on a number of alkene substrates. (springer.com)
  • species
  • The Heck reaction has mostly been used with alkenes bearing electron-withdrawing groups, but in fact the intermediate aryl organopalladium species can insert into a wide variety of alkenes. (organic-chemistry.org)
  • found
  • Biogenic alkenes found in the atmosphere - e.g., cis-3-hexen-1-ol, cis-3-hexenyl acetate, and methyl jasmonate - react rapidly, with rate constants above 1 × 10 9 M −1 s −1 . (atmos-chem-phys-discuss.net)
  • Other alkenes that occur in nature include 1-octene, a constituent of lemon oil, and octadecene (C 18 H 36 ) found in fish liver. (libretexts.org)
  • important
  • Controlling the isomerization of alkenes is important for the manufacturing of fuel additives, fine-chemicals and pharmaceuticals. (uva.nl)