55181-01-6Relevant academic research and scientific papers
S-Substituted Thiacyclobutenium Salts
Bodwell, James R.,Patwardhan, Bhalchandra H.,Dittmer, Donald C.
, p. 4192 - 4196 (2007/10/02)
Treatment of 3-phenyl- or 3-(2-naphthyl)-2H-thietes with trimethyl- or triethyloxonium tetrafluoroborate or with methyl trifluoromethansulfonate yields colorless S-alkylthiacyclobutenium salts.They react with cyanide ion to give both ring opened and dealk
PYRYLOCYANINES. 15. BENZOPYRYLO-2-CYANINES
Tolmachev, A. I.,Derevyanko, N. A.,Ishchenko, A. A.
, p. 891 - 896 (2007/10/02)
Symmetrical 4,4'-diphenyl-substituted benzopyrylo-2-monomethylidene, carbo-, and dicarbocyanines and their thio analogs, as well as unsymmetrical carbocyanines that contain, in addition to 4-phenylbenzopyrylium or 4-phenylbenzothiopyrylium rings, 3-ethylbenzothiazolium or 1,3,3-trimethyl-3H-indolium residues, were synthetised.The indicated dyes were more highly colored than their isomers that contain flavylium or thioflavylium residues.On the basis of the deviations calculated from the centres of the absorption bands it was concluded that the benzopyran residues in the dyes of the α series have greater electron donor character than those in the dyes of the γ series.
Synthesis of Heterocyclic Compounds : Part XXIV - Synthesis of 2,4-Disubstituted Thianaphthalenium Perchlorates and Thiachromans
Devdhar, R. S.,Gogte, V. N.,Tilak, B. D.
, p. 1014 - 1018 (2007/10/02)
Cyclodehydration of β-phenylmercaptopropyl phenyl ketone (V) and β-phenyl-β-phenylmercaptoethyl methyl ketone (VI) with 70percent perchloric acid gives a mixture of 2-methyl-4-phenylthianaphthalenium perchlorate (X), 4-methyl-2-phenylthianaphthalenium per
