Abstract The condensation of 1-(2-benzothiazolyl)-4-phenylsemicarbazide with (R2 N) 2 PX (X [dbnd] R2N. RO, Ph) proceeds with cleavage of the N—C (O) bond and formation of the title compounds which were also synthesized via similar treatment of 2- hydrazinobenzothiazole in good yields. Reactivities of (R, N), PX, spectroscopic properties of the products and preliminary mechanism of these reactions were discussed.
![1-ethoxy-1-(3-ethoxybenzo[4,5]thiazolo[3,2-d][1,2,4,3]triazaphosphol-2(3H)-yl)-N,N-diethylphosphinamine Structure](https://image.chemsrc.com/caspic/111/131471-63-1.png)
![1-(5-chloro-3-(diethylamino)benzo[4,5]thiazolo[3,2-d][1,2,4,3]triazaphosphol-2(3H)-yl)-N,N,N',N'-tetraethylphosphinediamine Structure](https://image.chemsrc.com/caspic/442/131471-72-2.png)
![1-(3-(diethylamino)benzo[4,5]thiazolo[3,2-d][1,2,4,3]triazaphosphol-2(3H)-yl)-N,N,N',N'-tetraethylphosphinediamine Structure](https://image.chemsrc.com/caspic/268/102348-33-4.png)
![1-(5-chloro-3-(dipropylamino)benzo[4,5]thiazolo[3,2-d][1,2,4,3]triazaphosphol-2(3H)-yl)-N,N,N',N'-tetrapropylphosphinediamine Structure](https://image.chemsrc.com/caspic/404/131471-73-3.png)