2-Arylcyclohexane-1,3-diones and 2-arylcyclopentane-1,3-diones can be converted in a facile 2-step, 1-pot manner to 2-aryl-3-azidocycloalk-2-en-1-ones. These azides can be smoothly cyclized to carbazolones and indolones with catalytic Rh2(O2CC7H15)4. Although 3-azido-2-phenylcyclohept-2-en-1-one could be readily prepared from 2-phenylcycloheptane-1,3-dione, by contrast the Rh-catalyzed cyclization
2-芳基
环己烷-1,3-二酮和2-芳基
环戊烷-1,3-二酮可以通过简单的两步、一锅法转化为2-芳基-3-
叠氮基环烷-2-en-1-酮。这些
叠氮化物可以在催化Rh 2 (O 2 CC 7 H 15 ) 4的作用下顺利环化为
咔唑酮和
吲哚酮。虽然 3-
叠氮基-2-苯基环庚-2-en-1-酮可以很容易地从 2-苯基
环庚烷-1,3-二酮制备,但相比之下,Rh 催化的环化反应优先于
吲哚生成
氮丙啶。机理和 DFT 研究补充了综合工作。