By Malcolm Sainsbury
Hardbound. numerous vitally important components of fragrant chemistry are spanned during this quantity. It contains chapters dedicated to benzoquinones, nitro compounds, metallo derivatives and fragrant hydrocarbons with substituents which comprise multiple nitrogen atom, e.g., azobenzenes, azides, and so forth.
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Extra resources for Chemistry of Carbon Compounds: 2nd Supplement to 2r.e v.3B, C, D
Representative of these transient compounds are 3,4-mandeloquinone (77) (M. M. J. Land, Biochim. Biophys. Acta, 1989, 998, 57) and Nacetyldehydrodopaquinone (78) (M. , J. Biol. , 1992, 267, 10355). P. , Spectrochim. 99,1261 ). S. , Organometallics, 1986, 5, 1086; J. Am. Chem. , 1987, 109, 32 2759). S. , 1990, 31,3723). W. T. Perri, P. W. Moore, Org. , 1990, 69,220). It is based on the addition of alkenyl- and alkynyl-lithiums to mono- and di-substituted cyclobutene-1,2-diones to yield the corresponding e~-ketols (82) and (83) in which R ] - R4 may be variously alkyl, aryl, heteroaryl, alkoxy, and trialkylsilyl.
Bruce, in S. , "The Chemistry of the Quinonoid Compounds", Wiley, l-ondon, 1974, Chap. 9; K. Maruyama and A. Osuka, in S. Patai and Z. , "The Chemistry of the Quinonoid Compounds", Vol. 2, Wiley, London, 1988, Chap. 13). Electron transfer from metalloporphyrins to triplet 1,4benzoquinone (S. , J. Photochem. Photobiol. N. Paddon-Row, Acc. Chem. , 1994, 27, 18) and from thianthrene to the triplets of 2,5-dichloro- and tetrachloro-l,4-benzoquinone (G. Jones, B. F. Griffin, J. Org. , 1993, 58, 2035; see also G.
Chem. , Chem. , 1993, 959). 1,2-Benzoquinone dimethides have been extensively studied, particularly as transient reactants in syntheses, notably those based on [4 + 2] cycloadditions. D. C. Dittmer, J. Org. , 1991,56, 1947; see also G. Kanai, N. Miyaura and A. Suzuki, Chem. , 1993, 845). It has also been obtained by an improved (potassium iodide - crown-6) Finkelstein elimination from (~,o~'-dibromo-o-xylene, and trapped with buckminsterfullerene (C6o) (P. , Angew. Chem. Int. Ed. , 1993, 32, 78); various substituted 1,2-benzoquinone dimethides, prepared by the thermolysis of benzocyclobutenes, also form adducts with C60 (A.
Chemistry of Carbon Compounds: 2nd Supplement to 2r.e v.3B, C, D by Malcolm Sainsbury