116669-49-9Relevant academic research and scientific papers
EFFICIENT OLEFINATION WITH α-ALKYL CYCLIC PHOSPHONAMIDES
Hanessian, Stephen,Bennani, Youssef L.,Leblanc, Yves
, p. 1411 - 1424 (2007/10/02)
A variety of acyclic and cyclic aldehydes and ketones can be converted into the corresponding alkylidene, benzylidene and methoxycarbonyl alkylidene derivatives by treatment with 1,3,2-diazaphospholidine-2-alkyl-1,3-dimethyl 2-oxides (α-alkyl cyclic phosphonamides) under mild conditions.This olefination method is particularly useful in the case of enolizable carbonyl compounds.
Facial Selectivities and Rate Effects in the Thermal Dimerization of Arylated 1,3-Dienes. 1,5-H Shift versus Dimerization of (Z)-1,3-Dienes
Mulzer, Johann,Kuehl, Uwe,Huttner, Gottfried,Evertz, Kaspar
, p. 2231 - 2238 (2007/10/02)
For the thermal dimerization of the dienes 1 and 4 a parallel increase in facial selectivity and reaction rate is observed on going from the (E)-alkyl-aryl dienes 1h-m and the (Z)-dienes 4a, b to the (E)-aryl-aryl dienes 1a-f.This phenomenon is inte
COMPLEXES OF TRANSITION METALS IN THE CHEMISTRY OF CONJUGATED SYSTEMS. I. CATALYTIC ADDITION OF ORGANOMAGNESIUM AND ORGANOLITHIUM COMPOUNDS TO ENYNES AND THEIR DERIVATIVES
Zubritskii, L. M.,Fomina, T. N.,Bal'yan, Kh. V.
, p. 63 - 71 (2007/10/02)
Hydrocarbons with a conjugated system of double and triple bonds are capable of catalytic addition of arylmagnesium halides and aryllithiums at the triple bond in the presence of the salts and complexes of transition metals of group VIII.The β-diketonate complexes of Ni(II) and Fe(III) have the greatest activity.In the case of aryllithiums uncatalyzed addition reactions occur as well.Under the same conditions aliphatic Grignard reagents and alkyllithiums give a complex mixture of addition, reduction and oligomerizatin products.The direction of addition is determined solely by the character of substitution in the enyne system.The product yields are also determined by the nature of the metal and of the ligands in the catalyst and by the character of the organomagnesium and organolithium compound.The effect of polar and steric factors of the substituents at the triple bond in the alkyl, aryl, and trialkylsilyl series leads to a change in the direction of coordination and to the formation of the products from addition at the double bond.
