215589-13-2Relevant academic research and scientific papers
Synthesis and photochemical cyclization of a novel enyne-carbodiimide
Schmittel, Michael,Rodriguez, David,Steffen, Jens-Peter
, p. 1372 - 1378 (2000)
The triplet sensitized cyclization of enyne-carbodiimide 4 leads to efficient formation of indoloquinoline 5 with concomittant loss of a methyl group. The efficient loss of the methyl group was explained using AM1 semiempirical calculations.
Two novel thermal biradical cyclizations in theory and experiment: New synthetic routes to 6H-indolo[2,3-b]quinolones and 2-amino-quinolones from enyne-carbodiimides
Schmittel, Michael,Steffen, Jens-Peter,Engels, Bernd,Lennartz, Christian,Hanrath, Michael
, p. 2371 - 2373 (2007/10/03)
The regioselectivity of the biradical cyclization of enyne-carbodiimides 1 can easily be controlled by variation of R1 at the alkyne terminus. Attachment of a hydrogen atom (R1 = H) leads to C2-C7 cyclization an
