108200-66-4Relevant academic research and scientific papers
Thermal pericyclic tandem reactions
Hopf, Henning,Wolff, Joachim
, p. 4009 - 4030 (2001)
Gas phase thermal isomerizations of twelve acetylenic systems, all of which can in principle undergo two successive pericyclic steps, are described. The substrates, the syntheses and spectroscopic properties of which are presented, are formal derivatives of but-2-yne, with different functional groups in the 1- and the 4-positions. The Cope, Claisen, Claisen ester, retro-ene, 1,5-hydrogen shift, and 1,5-homo hydrogen-shift processes were employed as the pericyclic steps from which the tandem processes were composed. The compositions of the pyrolysates obtained were determined over broad temperature ranges, and the mechanisms of the individual steps producing the pyrolysis products are discussed.
Double Diels-Alder Reaction of trans-3-Methylene-1,4-hexadiene and 1-Methyl-3-methylene-4-pentenyl Tosylate
Kanemasa, Shuji,Sakoh, Hirohiko,Wada, Eiji,Tsuge, Otohiko
, p. 1869 - 1876 (2007/10/02)
A cross-conjugated triene, trans-3-methylene-1,4-hexadiene, is accessible from the Grignard reagent of chloroprene and methyloxirane via 1-methyl-3-methylene-4-pentenyl tosylate.The diene-transmissive Diels-Alder reaction of the triene and the stepwise se
