The photolyses of pyrazolopyridazines (2a-c) lead to alkenes (4a-c). With added methanol, furan or buta-1,3-diene, intermediates (3a-c) are trapped as compounds (6a-c)–(8a-c) respectively.
吡唑并
哒嗪(2a-c)的光解会生成烯烃(4a-c)。加入
甲醇,
呋喃或1,3-二烯丁酯后,中间体(3a-c)分别被捕集为化合物(6a-c)-(8a-c)。