Process for preparing methyl dithiocarbazinate by reacting methyl bromide with the reaction product of carbon disulfide and hydrazine in an aqueous medium

US5877339A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

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

Key dates

• Filing date: Nov 7, 1996
• Grant date: Mar 2, 1999
• Expiry date: Nov 7, 2016

Classification

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

Abstract

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