2,3-dihydrobenz-4-oxa-1-thiins

C - Chemistry – Metallurgy – 07 – D

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99/18, 167/300,

C07D 327/06 (2006.01) C08K 5/46 (2006.01) C09K 15/12 (2006.01)

Patent

CA 1242734

Abstract of the DiscLosure: 2,3-dihydrobenzo-4-oxa-1- thiins of the generaL formuLa I Image I where R1, R2 and R3 are each hydrogen, methyL or methoxy, and R2 and R3 together may furthermore be a fused benzene ring, R4 is hydrogen or an m-vaLent aLiphatic hydrocarbon radicaL which may be interrupted by suLfur and/or carry thioL groups as substituents, or is haLogen when n is zero, X is -O-, -S- or -O-CO-, m is 1 or Z and n is zero or 1, are usefuL as antioxidants for organic materiaLs.

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