A Facile Synthesis of Novel Dihydroindeno[1,2-e][1,2,4]triazolo[3,4-b][1,3,4]thiadiazines Using HTIB
作者:Om Prakash、Deepak Kumar Aneja、Deepak Wadhwa、Ravi Kumar、Sanjiv Arora
DOI:10.1002/jhet.815
日期:2012.5
The synthesis of a series of 21 novel 3‐alkyl/aryl‐7/9‐methyl‐10,10a‐dihydroindeno[1,2‐e][1,2,4]triazolo[3,4‐b][1,3,4]thiadiazines (4) has been achieved by the cyclocondensation between 4/6‐methyl‐2‐tosyloxy‐1‐indanones (2) and 3‐alkyl/aryl‐4‐amino‐5‐mercapto‐1,2,4‐s‐triazoles (3). 4/6‐Methyl‐2‐tosyloxy‐1‐indanones (2) were readily accessible through hypervalent iodine oxidation of 4/6‐methyl‐1‐indanones
合成21种新颖的3-烷基/芳基-7 / 9-甲基-10,10a-二氢茚并[1,2-e] [1,2,4]三唑[3,4-b] [1, 3,4]噻二嗪(4)是通过4 / 6-甲基-2-甲苯磺酰氧基-1-茚满二酮(2)与3-烷基/芳基-4-氨基-5巯基1,2之间的环缩合而获得的, 4-三唑(3)。通过使用乙腈中的[(羟基)甲苯磺酰氧基碘]苯(HTIB,Koser试剂)对4 / 6-甲基-1-茚二酮进行高价碘氧化,可轻松获得4 / 6-甲基-2-甲苯磺酰氧基-1-茚满酮(2)。