Continuous Endoperoxidation of Conjugated Dienes and Subsequent Rearrangements Leading to C–H Oxidized Synthons
作者:Juliana M. de Souza、Timothy J. Brocksom、D.Tyler McQuade、Kleber T. de Oliveira
DOI:10.1021/acs.joc.8b01307
日期:2018.8.3
We have investigated the continuous flow photooxidation of several conjugated dienes and subsequent rearrangement using a practical and safe continuous-flow homemade engineered setup. End-to-end approaches involving endoperoxidation, Kornblum–DeLaMare rearrangement, and additional rearrangements are comprehensively detailed with optimization, scope, and scale-up to obtain useful hydroxyenones, furans
Synthesis and Chemistry of Unusual Bicyclic Endoperoxides Containing the Pyridazine Ring
作者:Galip Özer、Nurullah Saraçoǧlu、Metin Balci
DOI:10.1021/jo0345300
日期:2003.9.1
Inverse-Diels-Alder reaction of dimethyl 1,2,4,5-tetrazine-3,6-dicarboxylate with unsaturated bicyclicendoperoxides gave the bicyclicendoperoxides containing the pyridazine ring. The NEt(3) and CoTPP (TPP = tetraphenylporphyrin) catalyzed reaction of endoperoxide 8 resulted in the formation of hydroxy ketone 11 and cis-diol 9. Cleavage of the peroxide linkage in 8 with thiourea provided cis-diol
Palladium(0) catalyzed reaction of 1,3-diene 1,4-epiperoxides
作者:M. Suzuki、Y. Oda、R. Noyori
DOI:10.1016/s0040-4039(01)82971-3
日期:1981.1
Reaction of 1,3-diene 1,4-epiperoxides with Pd(PPh3)4 catalyst forms the corresponding 4-hydroxy enones, syn diepoxides, and 1,4-diols as the major products. The results are interpreted as being due to competing Pd(0)/Pd(II) and Pd(0)/Pd(I) exchange mechanisms.
Thermal, and especially photochemical, rearrangement of the endoperoxides (1) and (5)–(11) gives βγ-epoxycycloalkanones as primary products, accompanied by the expected syn-diepoxides.