Quinoline insolubles types

However, as shown in Figure 11, the type of quinoline insolubles strongly influence the structure of the coke formed. Primary quinoline insolubles lead to an isotropic coke with a very high coefficient of thermal expansion (16x10 6/K). In contrast, secondary quinoline insolubles also produce nearly isotropic coke, but they hardly affect the coefficient of thermal expansion (0% sec. QI = 3.5x10 "6/K 20% sec. QI = 4.1x10 "6/K). 

Yellow powder or bronze-yellow micalike particles. M.p. 963° (in sealed tube) d 5.018. Heat of formation —51.8 kcal. per mole (25°). Solubility in HgO (g. NiBrg/lOO g. solution) 56.6 (19°C) 61.0 (100°C). Soluble in methyl and ethyl alcohols, acetone and quinoline insoluble in toluene. Crystal structure sublimed product, C 19 type unsublimed product, variable between C 6 and V19 types. 

Various different types of cyclization have been used to prepare quinolines on insoluble supports. A reaction that enables the rapid preparation of substituted tetrahy-... 

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