Synthesis and Chemistry of Benzo[<i>e</i>][1,2,6]thiadiazino[3,4-<i>b</i>][1,4]diazepin-10(11<i>H</i>)-ones and Related Ring Transformations
作者:Andreas S. Kalogirou、Andreas Kourtellaris、Panayiotis A. Koutentis
DOI:10.1021/acs.joc.1c00206
日期:2021.4.16
6-thiadiazin-4-ylidene)amino]benzamides are cyclized to benzo[e][1,2,6]thiadiazino[3,4-b][1,4]diazepin-10(11H)-ones via (i) treatment with NaH and via (ii) Pd-catalyzed C-N coupling. The behavior of the latter toward nucleophiles and thermal, oxidative, and reductive conditions revealed unexpected transformations to 3,5-dioxo-4,5-dihydro-3H-benzo[e][1,4]diazepine-2-carbonitrile and 2-(4-substituted-1,2,5-thiadiazol-
将2-[((3,5-二氯-4 H -1,2,6-噻二嗪-4-亚烷基)氨基]苯甲酰胺环化为苯并[ e ] [1,2,6]噻二嗪[3,4- b ]通过(i)用NaH处理和通过(ii)Pd催化的CN偶联来制备[1,4]二氮杂-10(11 H)-。后者对亲核试剂和热,氧化和还原条件的行为显示出意外的转化为3,5-dioxo-4,5-dihydro-3 H-苯并[ e ] [1,4]二氮杂-2-腈和2 -(4-取代的1,2,5-丁二唑-3-基)喹唑啉-4(3 H)-。