moderate to excellent yield (57–90 %). The latter reacts with 2,4-diphenyl-1,3-diselenadiphosphetane-2,4-diselenide (Woollins' reagent, WR) in refluxing toluene to give a series of new 2,5-disubstituted 1,3,4-selenadiazoles (2a–t, 51–99 % yield). All compounds were characterized spectroscopically and six compounds were characterized crystallographically. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim
在
碳酸钠存在下酰
肼与碳酰
氯的反应产生相应的 1,2-二酰基
肼 [1a–t, R1C(O)NHNHC(O)R2, R1 = 芳基, R2 = 芳基或烷基]优异的产量(57-90%)。后者在回流
甲苯中与 2,4
-二苯基-1,3-二
硒二膦烷-2,4-二
硒化物(Woollins' 试剂,WR)反应生成一系列新的 2,5-二取代
1,3,4-硒二唑( 2a–t,51–99% 的产率)。对所有化合物进行了光谱表征,并通过晶体学表征了六种化合物。(© Wiley-
VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)