A number of spiro [cyclopentane (cyclohexane, and cycloheptane)-1, 4′-perhydro-[1, 3, 2] diazaphosphole] derivatives (3a–c, 5a–c, 11a–c, and 12a–c) and spiro-[cyclopentane (cyclohexane, and cycloheptane)-1, 4′-perhydro [1, 3, 2] oxaazaphos-phole] derivatives