3,4-Dihydro-2H-benzopyran derivatives, a method of producing the

Details 3,4-Dihydro-2H-benzopyran derivatives, a method of producing the 3,4-Dihydro-2H-benzopyran derivatives, a method of producing the

1983-11-15

1985-06-11

Chan, Nicky

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549389, 549214, 549411, 524110, 585 3, 523202, C07D31172

Patent

active

045230242

ABSTRACT:
There is provided a class of novel 3,4-dihydro-2H-benzopyran derivatives which either have excellent inhibitory activity against unfavorable effects of heat, light and oxidative factors or are of use as precursors of compounds having such activity, and methods for producing these derivatives. Also provided are methods of using such 3,4-dihydro-2H-benzopyran derivatives as stabilizers for organic materials sensitive to heat, light or/and oxidative factors, and organic compositions containing such stabilizers.

REFERENCES:
patent: 4127608 (1978-11-01), Olson et al.
patent: 4374258 (1983-02-01), Horner et al.

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