The Journal of Organic Chemistry

Synthesis of quinolinoquinones and 1, 2, 3, 4-tetrahydroquinolinoquinones via cyclobutenediones

LS Liebeskind, J Zhang

Index: Liebeskind, Lanny S.; Zhang, Jing Journal of Organic Chemistry, 1991 , vol. 56, # 22 p. 6379 - 6385

Full Text: HTML

Citation Number: 39

Abstract

Conclusions Hydrogen abstractions by triplet cyclopropylidene (1) and planar triplet allene (2) are predicted to have nearly identical activation energies of< 19 kcal/mol. Because of limitations in the quantum mechanical model, these numbers are likely to be somewhat high. Both reactions are slightly exothermic. Predicted barriers are similar to those of other free radicals and triplet carbenes. Our results support previous conclusions that intermediates ...

Related Articles:

Asymmetric synthesis of metallocenes through enantioselective addition of organolithium reagents to 6-(dimethylamino) fulvene

[Suzuka, Toshimasa; Ogasawara, Masamichi; Hayashi, Tamio Journal of Organic Chemistry, 2002 , vol. 67, # 10 p. 3355 - 3359]

The molecular structure of 1-lithio-2-methoxybenzene in the solid state and in solution

[Harder, Sjoerd; Boersma, Jaap; Brandsma, Lambert; Mier, Guido P. M. van; Kanters, Jan A. Journal of Organometallic Chemistry, 1989 , vol. 364, p. 1 - 16]

ortho-Lithiations Reassessed: the Advantages of Deficiency Catalysis in Hydrocarbon Media

[Slocum; Reinscheld, Thomas K.; White, Christopher B.; Timmons, Michael D.; Shelton, Philip A.; Slocum, Matthew G.; Sandlin, Rebecca D.; Holland, Erica G.; Kusmic, Damir; Jennings, John A.; Tekin, Kristen C.; Nguyen, Quang; Bush, Steven J.; Keller, Julia M.; Whitley, Paul E. Organometallics, 2013 , vol. 32, # 6 p. 1674 - 1686]

Stereostructure and thermodynamic stability of atropisomers of ortho-substituted 2, 2′-diaryl-1, 1′-binaphthalenes

[Ehn, Marcel; Vassilev, Nikolay Georgiev; Kasak, Peter; Horvath, Branislav; Filo, Juraj; Mereiter, Kurt; Rakovsky, Erik; Putala, Martin Tetrahedron Asymmetry, 2013 , vol. 24, # 20 p. 1303 - 1311]

The Rate of Reaction of Ethyllithium and Anisole

[Fagley; Klein Journal of the American Chemical Society, 1955 , vol. 77, p. 786]

More Articles...