1,8-Diazabicyclo(5.4.0)undec-7-ene → 2-[[(4-Methoxy-6-methyl-2-pyrimidinyl)aminocarbonyl]aminosulfonyl]-N-methoxybenzenecarboximidoyl chloride

Participants

Reaction Steps

To a suspension of 0.4 g of the product of Example 4 and 0.46 g of phenyl(4-methoxy-6-methylpyrimidin-2-yl)carbamate in 10 ml of dry acetonitrile was added 0.25 g of DBU. The suspension was stirred for about two hours at room temperature, then diluted with excess water and filtered. The filtrate was acidified with concentrated hydrochloric acid to yield a precipitate. After filtration, the residue was washed with excess water and suction-dried to yield 0.35 g of the subject compound, m.p. 178° to 179° C.;

Provenance & Evidence