Process for the preparation of pyrethroid acids

Details Process for the preparation of pyrethroid acids Process for the preparation of pyrethroid acids

1986-05-30

1987-09-01

Shippen, Michael L.

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

Organic compounds

Carboxylic acids and salts thereof

562500, 568348, 568364, 568381, C07C 5100

Patent

active

046910522

ABSTRACT:
Pyrethroid acids are prepared by conducting a cycloaddition reaction of a conjugated diene and a dihaloketene to form a dihalo-vinylcyclobutanone product; reducing the dihalo-vinylcyclobutanone product to a monohalo-vinylcyclobutanone product and then conducting a ring contraction with a base to form the desired acid product.

REFERENCES:
patent: 4028418 (1977-06-01), Brink
patent: 4064174 (1977-12-01), Verbrugge
patent: 4242278 (1980-12-01), Martin
patent: 4284821 (1981-08-01), Martin
patent: 4291176 (1981-09-01), Heine
patent: 4390719 (1983-06-01), Schwarze
Krepski, J. Org. Chem., 43, pp. 2879-2882 (1978).
Bak, J. Org. Chem, 44, pp. 107-110 (1979).
Elliott, Chem. Soc. Rev., 7, pp. 473-475 (1978).

Affiliated with

Also associated with

Rating

Process for the preparation of pyrethroid acids 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 pyrethroid acids, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of pyrethroid acids will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1266239