Process for the preparation of 1,2-benzisothiazoles

Details Process for the preparation of 1,2-benzisothiazoles Process for the preparation of 1,2-benzisothiazoles

1994-09-07

1996-06-18

Richter, Johann

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D27504

Patent

active

055279171

ABSTRACT:
A process for the preparation of 1,2-benzisothiazoles of formula I ##STR1## wherein X is in any one of the 4 possible positions of the benzene ring and is hydrogen, halogen, nitro, C.sub.1 -C.sub.4 alkoxy, halo-C.sub.1 -C.sub.4 alkoxy, C.sub.2 -C.sub.4 alkenyloxy or C.sub.2 -C.sub.4 alkynyloxy, in which process a compound of formula II ##STR2## wherein X is as defined for formula I and R.sub.1 is hydrogen or an unsubstituted or substituted C.sub.1 -C.sub.12 hydrocarbon radical, is reacted in the presence of a catalytic amount of a strong acid.
Compounds of formula I are known as pesticides, especially as nematicides.

REFERENCES:
patent: 4939302 (1990-07-01), Roberts
patent: 5169951 (1992-12-01), Sutter et al.
patent: 5260485 (1993-11-01), Calbick et al.
J. Chem. Soc., Perkin Trans. I, 1973 pp. 356-359, K. Clarke et al.
Adv. Heterocycl Chem., 38, 1985, pp. 106-133, M. Davis.
Can. J. Chem., 66, No. 6, 1988, pp. 1405-1409, D. M. McKinnon et al.
Chem. Abstract, vol. 59, 872(d) (1963).
Ann. Chim. (Roma), vol. 53, pp. 577-587, (1963).
Ann. Chim. (Roma), vol. 53/12, pp. 1860-1868 (1963).
Chemical Abstracts, vol. 60, 12000(d) (1964).
J. Chem. Soc. (C) 1971, pp. 3994-3999.
J. Org. Chem., vol. 43, No. 9, 1978, pp. 1824-1825.
Phosphorus and Sulfur, 1982, vol. 12, pp. 357-367.
Liebigs Ann. Chem. (1980), pp. 768-778.
L. K. A. Rahman et al., J. Chem. Soc. Perkin Trans. I, pp. 385-390 (1984).
O. Meth-Cohn et al., Synthesis, 1, pp. 58-60 (1978).
D. M. McKinnon et al., J. Heterocyclic Chem., 28, pp. 445-448 (1991).
D. M. McKinnon et al., Can. J. Chem., 66, 1405-1409 (1988).

Affiliated with

Also associated with

Rating

Process for the preparation of 1,2-benzisothiazoles does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the preparation of 1,2-benzisothiazoles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of 1,2-benzisothiazoles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-223935