N,N'-(2-amino-5-nitrosopyrimidine-4,6-diyl)bis(2-methylprop-2-enamide) 、
2,3-二甲基-1,3-丁二烯 以
甲苯 为溶剂,
反应 0.5h,
以97%的产率得到(1RS)-N-{2'-amino-8',9'-dihydro-3,4-dimethyl-8'-oxospiro[cyclohex-3-ene-1,7'-pyrimido[4,5-b][1,4]diazepin]-4'yl}-2-methylprop-2-enamide