以亚氨基二乙腈为起始原料,经过亚硝基化、环合、硝化三步反应得到2,6-二氨基-3,5-二硝基吡嗪-1-氧化物(LLM-105)。确定了硝化2,6-二氨基吡嗪-1-氧化物(DAPO)制备LLM-105的最佳工艺条件为:反应温度25℃,反应时间5h,用发烟硝酸或硝酸钾...以亚氨基二乙腈为起始原料,经过亚硝基化、环合、硝化三步反应得到2,6-二氨基-3,5-二硝基吡嗪-1-氧化物(LLM-105)。确定了硝化2,6-二氨基吡嗪-1-氧化物(DAPO)制备LLM-105的最佳工艺条件为:反应温度25℃,反应时间5h,用发烟硝酸或硝酸钾向发烟硫酸和2,6-二氨基吡嗪-1-氧化物混合物中加料的工艺路线,总产率为35%。用1 H NMR,IR,MS对DAPO和LLM-105的结构进行了表征,推测了DAPO环化反应历程。展开更多
The synthesis of an new photochromical compound,1,3,3 trimethyl 6′ (1 piperidinyl) spiro[2h indole 2,3′ [3H]pyridobenzoxazine (SP3),and an improved way for the synthesis of 6 hydroxyquinoline were descrided.The abso...The synthesis of an new photochromical compound,1,3,3 trimethyl 6′ (1 piperidinyl) spiro[2h indole 2,3′ [3H]pyridobenzoxazine (SP3),and an improved way for the synthesis of 6 hydroxyquinoline were descrided.The absorption spectrum of the colored metastable form SP3 shows prominent absorption peak at 560nm at 60℃?展开更多
文摘以亚氨基二乙腈为起始原料,经过亚硝基化、环合、硝化三步反应得到2,6-二氨基-3,5-二硝基吡嗪-1-氧化物(LLM-105)。确定了硝化2,6-二氨基吡嗪-1-氧化物(DAPO)制备LLM-105的最佳工艺条件为:反应温度25℃,反应时间5h,用发烟硝酸或硝酸钾向发烟硫酸和2,6-二氨基吡嗪-1-氧化物混合物中加料的工艺路线,总产率为35%。用1 H NMR,IR,MS对DAPO和LLM-105的结构进行了表征,推测了DAPO环化反应历程。
文摘The synthesis of an new photochromical compound,1,3,3 trimethyl 6′ (1 piperidinyl) spiro[2h indole 2,3′ [3H]pyridobenzoxazine (SP3),and an improved way for the synthesis of 6 hydroxyquinoline were descrided.The absorption spectrum of the colored metastable form SP3 shows prominent absorption peak at 560nm at 60℃?
