Furobenzopyran derivatives, process for preparation of same and

Details Furobenzopyran derivatives, process for preparation of same and Furobenzopyran derivatives, process for preparation of same and

1993-05-24

1994-10-18

Chan, Nicky

Plant protecting and regulating compositions

Plant growth regulating compositions

Organic active compound containing

549387, A01N 4316, C07D31178

Patent

active

053568664

ABSTRACT:
Furobenzopyran derivatives of the general formula (I): ##STR1## in which R.sup.1 is a lower alkyl group, R.sup.2 is a lower alkyl group, lower alkoxy group, halogen atom or lower alkyl group substituted by a halogen atom, R.sup.3 is a lower alkyl group, lower alkoxy group, halogen atom, lower alkyl group substituted by a halogen atom, phenoxy group or benzyloxy group, R.sup.4 is a hydrogen atom or lower alkyl group and m and n are any integers between 0 and 4, have an excellent herbicidal activity on weeds and are completely selective to crops such as paddy rice, soybeans and cotton.

REFERENCES:
patent: 3661935 (1972-05-01), Aldridge et al.
patent: 4534785 (1985-08-01), Loh
patent: 4554010 (1985-11-01), Loh
D. C. Aldridge et al, "Metabolites of Helminthosporium monoceras: Structures of Monocerin and Related Benzopyrans", J. Chem. Soc. (C) 2598-2600 (1970).
O. R. Martin et al, "Synthesis of C-Glycosylarenes By Way of Internal Reactions of Benzylated and Benzoylated Carbohydrate Derivatives", Carbohydrate Research, 196:41-58 (1990).
O. R. Martin, "Intramolecular C-Arylation of 2,3,5-Tro-O-Benzyl- and 2,3,5-Tri-O-(3-Methylbenzyl)-Pentofuranose Derivatives", Carbohydrate Research, 171:211-222 (1987).

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