1972 年 92 巻 2 号 p. 146-149
Photochemical reaction of 3-tosyl-1, 2-dihydro-3H-pyrazino[3, 2, 1-kl]phenoxazine (Ia) was examined under various conditions and the formation mechanism of the products, 6-tosyl-1, 2-dihydro-3H-pyrazino[3, 2, 1-kl]phenoxazine (IIa) and 1, 2-dihydro-3H-pyrazino-[3, 2, 1-kl]phenoxazine (IIIa), was clarified.