Bispyridylnorbornadienes were synthesized using the Diels–Alder reaction of HBF4 salts of bispyridylacetylenes with cyclopentadiene. They underwent the photocyclization to give quadricyclanes which reverted to norbornadienes by heating or a catalyst. Bis(N-methylpyridyl)norbornadienes were also synthesized and the photoreactions were investigated.
                                    Bispyridylnorbornadienes是通过将双
吡啶乙炔的
HBF4盐与
环戊二烯进行Diels–Alder反应合成的。它们进行了光环化反应,生成四环烯,然后通过加热或催化剂转化为诺尔
叠氮烯。同时也合成了双(N-
甲基吡啶)诺尔
叠氮烯,并对其光反应进行了研究。