atur ated ▁conjug ated ▁al de hy des ▁such ▁as ▁cro ton al de hy de ▁( trans - but - 2 - en al ) ▁react ▁with ▁DM CC ▁forming ▁di en yl ▁car b am ates , ▁which ▁can ▁be ▁used ▁as ▁di enes ▁in ▁D iels – A lder ▁re actions . ▁ ▁Al k ali ▁metal ▁car box yl ates ▁react ▁with ▁DM CC ▁forming ▁the ▁corresponding ▁dim eth yl am ides . ▁DM CC ▁react s ▁with ▁an h yd r ous ▁sod ium ▁carbon ate ▁or ▁with ▁excess ▁dim eth yl am ine ▁to ▁form ▁t et ram eth yl ure a . ▁ ▁The ▁reaction ▁of ▁DM CC ▁with ▁DM F ▁forms ▁t et ram eth yl form am id in ium ▁ch lor ide , ▁which ▁is ▁a ▁major ▁intermediate ▁in ▁the ▁prepar ation ▁of ▁tr is ( dim eth yl am ino ) m eth ane , ▁a ▁re agent ▁for ▁the ▁introduction ▁of ▁en am ine ▁functions ▁in ▁conj unction ▁with ▁activ ated ▁m eth yl ene ▁groups ▁and ▁the ▁prepar ation ▁of ▁amid ines . ▁ ▁DM CC ▁is ▁a ▁starting ▁material ▁for ▁the ▁insect ic ide ▁class ▁of ▁the ▁dim eth yl ▁car b am ates ▁which ▁act ▁as ▁in hib itors ▁of ▁ac et yl ch olin ester ase , ▁including ▁dim et il ane , ▁and ▁the ▁related ▁comp ounds ▁isol ane , ▁pir im ic ar b ▁and ▁tri az am ate . ▁ ▁The ▁qu atern ary