Methanethiol → N-(2-chlorophenylsulfonyl)-N'-(4-methoxy-6-methyl-2-pyrimidinyl) thiourea

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

A solution of 5.0 g of methyl N-(2-chlorophenylsulfonyl)dithiocarbamate in 20 ml of xylene is stirred for 3.5 hours with heating at 145° C. During the heating, methylmercaptan gas is generated. After the reaction is completed, xylene is removed under reduced pressure to yield a pale yellow oil (IR: strong absorption band of -SO2NCS at 1900 cm-1). The oily substance is dissolved in 50 ml of acetonitrile, to which 2.8 g of 2-amino-4-methoxy-6-methylpyrimidine is added and stirred for 30 minutes at 50° C. The precipitated crystals are collected by filtration, and recrystallized from acetonitrile to give 5.6 g of the title compound as a white prism. mp 186.5°~187.5° C.

Herkunft & Nachweise