Advances in Heterocyclic Chemistry, Vol. 26 by A.R. Katritzky, A.J. Boulton (Eds.)

By A.R. Katritzky, A.J. Boulton (Eds.)

(from preface)Volume 26 includes 3 chapters. C.A.Ramsden experiences heterocy-clic betaines derived from 6-membered heteroaromatic jewelry. those compounds were intensively studied during the last 10 years and feature now not formerly been comprehensively reviewed. O. Meth-Cohn and B. Tarnowski summarize the chemistry of the thiocoumarins, a just a little ignored team of heterocycles. ultimately, W. Friedrichsen has reviewed the chemistry of the benzo[r]furans which, not like the aza and thia analogs, haven't formerly been thought of during this sequence. right here back now we have a gaggle of compounds the chemistry of which has complicated significantly over the past decade.

Show description

Read or Download Advances in Heterocyclic Chemistry, Vol. 26 PDF

Similar chemistry books

Recent Advances in Chemistry and Technology of Fats and Oils

In view that we produced fat and Oils: Chemistry and expertise in 1980, the fad we expected to up-date the classical texts of oils and fat has manifested itself. Bailey's recognized textbook has been thoroughly revised and a moment version of Bernardini's paintings has been produced. the current textual content is an try and offer a few perception into the present state-of-the-art.

Inverse Gas Chromatography. Characterization of Polymers and Other Materials

Content material: evaluate of inverse gasoline chromatography / Henry P. Schreiber and Douglas R. Lloyd -- Experimental thoughts for inverse fuel chromatography / A. E. Bolvari, Thomas Carl Ward, P. A. Koning, and D. P. Sheehy -- reports of polymer constitution and interactions by way of computerized inverse gasoline chromatography / James E.

Chemistry of Heterocyclic Compounds: Small Ring Heterocycles, Part 3: Oxiranes, Arene Oxides, Oxaziridines, Dioxetanes, Thietanes, Thietes, Thiazetes, and Others, Volume 42

Oxiranes (M. Bartok and okay. Lang). Arene Oxides-Oxpins (D. Boyd and D. Jerina). Oxaziridines (M. Haddadin and J. Freeman). Dioxetanes and a-Peroxylactones (W. Adam and F. Yany). 4-membered Sulfur Heterocycles (D. Dittmer and T. Sedergran). writer and topic Indexes. content material: bankruptcy I Oxiranes (pages 1–196): M.

Additional info for Advances in Heterocyclic Chemistry, Vol. 26

Sample text

74 N. Dennis, B. Ibrahim, and A. R. s. 105 (1976). 24 CHRISTOPHER A. RAMSDEN [Sec. A \ R R 8 behavior is observed using disubstituted e t h y l e n e ~ The . ~ ~ different orbital symmetry characteristics of 4n-electron I ,3-dipolarophiles results in addition across the betaine 2,4-positions. Compound 123 with 2,3-dimethylbuta-l,3diene gives the 2,4-adduct 128. Cyclopentadiene gives a mixture of products including a 2,4-adduct. 6n-Electron addends are like olefins in that 2,6adducts are formed.

6036 (1965). D. E. Ames, R. F. Chapman, and D. Waite, J . Chem. Soc. C, 470 (1966). D. E. Ames and R. F. Chapman, J . Chem. Soc. C, 40 (1967). D. E. Ames. B. Novitt, D. Waite, and H. Lund, J . Chem. Soc. C , 796 (1969). D. E. Ames and B. Novitt. J. Chem. Soc. C , 2355 (1969). 1 6 4 D. E. Ames, H. R. Ansari, A. D. G. France, A. C. Lovesey, B. Novitt, and R. Simpson, J . Chem. Soc. C, 3088 (1971). 165 D. E. Ames, S. Chandrasekhar. and R. Simpson, J . C . , Perkin 1, 2035 (1975). 1 6 6 G . M. Singerman, in “The Chemistry of Heterocyclic Compounds” (R.

B CHRISTOPHER A. RAMSDEN The 2-alkylcinnolinium-4-olates (233) are stable, colorless compounds. , 234; R' = M e and 246); this trend is useful for diagnosing the position of alkylation of 4-hydroxycinnolines. " O S 1 '' The chemical reactions of the cinnolinium-4-olates (233) are conveniently illustrated by considering specific reactions of the 2-methyl derivative (243) (Scheme 10). Compound 243 readily forms salts: Ethanolic hydrogen chloride gives 2-methyl-4-hydroxycinnolinium chloride (239)' 5 4 and triethyloxonium tetrafluoroborate gives 2-methyl-4-ethoxycinnolinium tetra- &+ OEt 0- I BF; \ NGNMe W N M e (239) // \ a: 0 v ' S I @+ \ vi N' 0 II N//NMe C0,Me SCHEME 10.

Download PDF sample

Rated 4.73 of 5 – based on 37 votes