95054-81-2Relevant academic research and scientific papers
Preparation of 2-Alkenylsilanes and 2-Alkenylstannanes by the Reaction of 2-Alkenyl-1,1-cyclopropanedicarboxylate Esters with PhMe2SiAlEt2 and (Ph3Sn)2Zn. Generation of 2-Alkenyl-3-cyclopentene-1,1-dicarboxylates via Alkenyl-Substituted ?-Allylpalladium Complexes Derived from ...
Fugami, Keigo,Oshima, Koichiro,Utimoto, Kiitiro,Nozaki, Hitosi
, p. 2509 - 2516 (2007/10/02)
Reaction of 2-vinyl-1,1-cyclopropanedicarboxylate with PhMe2SiAlEt2, PhMe2SiZnEt2Li, or (Ph3Sn)2Zn gave 1,7-homoconjugate addition products, 2-alkenylsilanes or 2-alkenylstannanes.In a similar fashion, 2-(1,3-butadienyl)-1,1-cyclopropanedicarboxylate provided the corresponding 1,9-homoconjugate adducts, dienylsilanes or dienylstannanes.The adducts were converted into ?-allylpalladium complexes by means of .Treatment of the alkenyl-substituted ?-allylpalladium complexes derived from dienylsilanes and with bases such as PPh3 or Na2CO3 gave 2-alkenyl-3-cyclopentene-1,1-dicarboxylates.In contrast, the reaction of the ?-allylpalladiums generated from 2-alkenylsilanes and with the bases resulted in the formation of original vinylcyclopropane derivatives.
Pd(0) PROMOTED REARRANGEMENT OF 2-(1,3-BUTADIENYL)CYCLOPROPANE-1,1-DICARBOXYLATE ESTERS TO 2-ALKENYL-3-CYCLOPENTENE-1,1-DICARBOXYLATE ESTERS
Morizawa, Yoshitomi,Oshima, Koichiro,Nozaki, Hitosi
, p. 2871 - 2874 (2007/10/02)
The title dienylcyclopropanes smoothly rearrange to five-membered rings in the presence of Pd(0) catalyst under mild conditions.
