Isoprene reacts with aldehydes in the presence of a catalytic amount of Pd(OAc)2–4PPh3 or Pd(PPh3)4 and a stoichiometric amount of SnCl2 at 40–50 °C in AcOH–H2O to produce 1-substituted 2,2-dimethyl-3-buten-1-ols regioselectively.
Irradiation of aromatic carbonylcompounds and allyl-, 2-methyl-2-propenyl-, or 3-methyl-2-butenyltrimethylstannanes in acetonitrile afforded δ,γ-unsaturated alcohols as major product. A photoinduced electron transfer mechanism is proposed for the allylations.
Highly stereoselective allylation of aldehydes with pentacoordinate allylsilicates in hydroxylic media. Discrimination between linear and .alpha.-branched alkanals
作者:Mitsuo Kira、Kazuhiko Sato、Hideki Sakurai
DOI:10.1021/ja00157a040
日期:1990.1
L'allylation d'aldehyde avec des (allyl trifluoro) silanes en presence de divers composes hydroxyles et de triethylamine donne les alcools homoallyliques correspondants, de facon regio- et stereospecifique
L'allylation d'aldehyde avec des (allyl trifluoro) 硅烷 en 存在 de divers 组成hydroxyles et de triethylamine donne les alcools homoallyliques 对应物, de facon regio- et立体特定
Pentaco-ordinate silicon compounds in synthesis: regiospecific allylation of aldehydes by use of triethylammonium bis(pyrocatecholato)allylsilicates
作者:Akira Hosomi、Shinya Kohra、Yoshinori Tominaga
DOI:10.1039/c39870001517
日期:——
The title compounds, readily prepared from allytrimethoxysilane, pyrocatechol, and triethylamine, react with aldehydesregiospecifically and chemoselectively without catalyst under mild conditions: the allylation takes place even in protic solvents such as ethanol.
Studies in organosilicon chemistry. 100. Pentacoordinate allylsiliconates in organic synthesis: synthesis of triethylammonium bis(catecholato)allylsiliconates and selective allylation of aldehydes