Transfert de l'ethoxycarbonylcarbene sur les alcynes substitues en α par un groupe partant
作者:M. Vincens、A. Dussauge、M. Vidal
DOI:10.1016/0040-4020(77)88027-7
日期:1977.1
Synthesis of ethyl cyclopropenecarboxylates with a leaving group on the position α to the double bond has been realised by photolytic or thermocatalytic decomposition of ethyl diazoacetate with acetylenic substrates. With these adducts allenic, a etylenic or dienic esters are obtained. In the case of photolytic transfer, the proposed intermediate agent is ethoxycarbonyl carbene. If the transfer is
Novel, Stereoselective and Stereospecific Synthesis of Allenylphosphonates and Related Compounds via Palladium-Catalyzed Propargylic Substitution
作者:Marcin Kalek、Jacek Stawinski
DOI:10.1002/adsc.201100119
日期:2011.7
allenylphosphonates and related compounds based on a palladium(0)‐catalyzedreaction of propargylic derivatives with H‐phosphonate, H‐phosphonothioate, H‐phosphonoselenoate, and H‐phosphinate esters. The reaction is stereoselective and stereospecific, and provides a convenient entry to a vast array of allenylphosphonates and their analogues with diverse substitution patterns in the allenic moiety and at the phosphorus
Addition and cycloaddition reactions of allenyl cations with various cycloalka-1,3-dienes
作者:Herbert Mayr、Franz Schütz
DOI:10.1016/0040-4039(81)89010-7
日期:1981.1
Allenyl cations , generated from propargylchlorides and zincchloride give monocyclic adducts or [3+4] and [2+4] cycloaddition products with various cycloalka-1,3-dienes. The mode of addition depends on R and the ring size of the 1,3-dienes.