Synthesis of photochromic indolinespiropyrans

Details Synthesis of photochromic indolinespiropyrans Synthesis of photochromic indolinespiropyrans

1970-03-05

1976-04-13

Narcavage, Joseph A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D20954

Patent

active

039503569

ABSTRACT:
Photochromic indolinespiropyrans are formed in a substantially pure state by the reaction of a 2-alkyleneindoline and an orthohydroxyl aromatic aldehyde dissolved in dimethylformamide.

REFERENCES:
Kittila, Dimethylformamide Chemical Uses, (1967), pp. VIII-IX, E. I. Du Pont de Nemours and Co.

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