Process for preparing methyl dithiocarbazinate by reacting methyl bromide with the reaction product of carbon disulfide, hydrazine and an adjunct base

US6025514A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Dennis E. Jackman · Prairie Village, US
• David Erdman · Neunburg vorm Wald, DE
• Peter E. Newallis · Leawood, US
• Daniel M. Wasleski · Raytown, US
• Vijay C. Desai · Shawnee, US
• Jeffrey D. Macke · Stanton, US
• Vidyanatha A. Prasad · Leawood, US

Key dates

• Filing date: Sep 21, 1998
• Grant date: Feb 15, 2000
• Expiry date: Sep 21, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C337/02
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Disclosed herein is a process for preparing high yields of methyl dithiocarbazinate by reacting carbon disulfide, hydrazine and a base in an aqueous medium, in an effective ratio to form a dithiocarbazinate salt followed by methylating the dithiocarbazinate salt with methyl bromide.