N-(1,2,2,2-tetrachloroethyl)-formimide-chloride for synthesizing trichlorothiazole

US4013674A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Gunther Beck · Leverkusen, DE
• Helmut Heitzer · Leverkusen, DE

Key dates

• Filing date: Dec 9, 1975
• Grant date: Mar 22, 1977
• Expiry date: Dec 9, 1995

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D277/32
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The new compound N-(1,2,2,2-tetrachloroethyl)-formimide chloride of the formula ##STR1## is produced by reacting a substituted formamide of the formula ##STR2## wherein X is OH or Cl, With approximately the stoichiometrically required amount of a highly reactive inorganic acid chloride, e.g. phosphorus pentachloride. The compound (I) can be reacted with sulfur at about 150.degree. to 250.degree. C to produce trichlorothiazole of the formula ##STR3## which is known to have insecticidal activity.