Studies in the Cyanine Dye Series. VIII. Dyes Derived from 2-Methylphenanthro-[9, 10]-thiazole

GH Keyes, LGS Brooker

Index: Keyes; Brooker Journal of the American Chemical Society, 1937 , vol. 59, p. 74,76

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Citation Number: 6

Abstract

4800 A. 1, l'-Diethyl-2'-iodo-4-methyl-2, 4'-cyanine Iodide (XI).-2-Iodolepidine ethiodide (4.25 g.; 2 mols), triethylamine (1.5 cc.; 2.1 mols) and ethyl alcohol (25 cc.) were refluxed for twenty minutes. Dye separated from the hot reaction mixture; yield 71%(44%; 140 cc. per g.). After a further recrystallization (yield 20%) the greenishbronze crystals had mp 231-232", dec. 272-274', dec.