Chromans, synthesis

Benzofurans, 4, 531-597, 657-712 chroman synthesis from, 3, 785 chromene synthesis from, 3, 753 chromone synthesis from, 3, 828 CNDO, 4, 536... 

Paraxanthine—see Xanthine, 1,7-dimethyl-Parent name nomenclature, 1, 35 Parham cycloalkylation in chroman synthesis, 3, 783 Paromomycins as pharmaceuticals, 1, 154 Partial charge transfer from donor to acceptor stacks, 1, 350 Pasteurellosis... 

C NMR, 3, 585 chroman synthesis from, 3, 787 derivatives as fungicides, 1, 193 dipole moments, 3, 626-627 fused... 

The major features of the [4 + 2]-cycloaddition process have been discussed earlier under dihydropyrans (p. 770) and in this section examples of its application to chroman synthesis will be covered, together with relevant ancillary material. 

Coumarin, 7-diethylamino-4-methyl-fluorescence, 3, 879 Coumarin, dihydro-chroman synthesis from, 3, 785 4H-chromene synthesis from, 3, 765 coumarin synthesis from, 3, 810 mass spectra, 2, 23 synthesis, 3, 848 Coumarin, 3,4-dihydro-4,4-disubstituted synthesis, 3, 754... 

Saccharin, 2-methyl-reduction, 6, 152 Saccharin, 6-nitro-reduction, 6, 154 Saccharin, thio-hydrolysis, 6, 161 methylation, 6, 160 Safranines applications, 3, 196 Safrole derivatives toxicity, 1, 139-140 occurrence, 6, 781 Safrole, 1-hydroxy-toxicity, 1, 140 Salazosulfapyridine intestinal disorders and, 2, 517 Salicylaldehydes chroman synthesis from, 3, 782 Salicylanilides ... 

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