Microwave Irradiation for Accelerating each Step for the Synthesis of 1,2,4-Triazino[5,6-<i>b</i>]indole-3-thiolsand their Derivatives from Isatin and 5-Chloroisatin
作者:El Sayed H. El Ashry、El Sayed Ramadan、Hamida M. Hamid、Mohamed Hagar
DOI:10.1055/s-2004-815437
日期:——
Microwave irradiation has been used to accelerate the conversion of isatin (1), 5-chloroisatin (2), and N-benzylisatin (3) to their thiosemicarbazones and their subsequent cyclization into 1,2,4-triazino[5,6-b]indole-3-thiols 7 and 8; and the N-benzyl derivative 9. Selective and complete alkylation of 1, 7, 8, and 9 has also been achieved under microwave irradiation.
微波辐射已被用于加速异靛(1)、5-氯异靛(2)和N-苄基异靛(3)转化为其硫脲衍生物,并随后环化为1,2,4-三氮唑[5,6-b]吲哚-3-硫醇7和8,以及N-苄基衍生物9。在微波辐射下,1、7、8和9的选择性和完全烷基化也已实现。